How a Family-Owned Greek Cement Company Evolved Its Leadership While Pivoting Its Product Portfolio

Over 26 years at the helm, Dimitri Papalexopoulos, fourth-generation CEO of TITAN Cement, has turned the company from a domestic player into an internationally diversified group and championed an AI-driven productivity leap, even while steering the company through multiple economic crises. As TITAN prepared for its next phase of growth, Papalexopoulos faced the consequential decision of whether to continue leading the company, promote a trusted insider, or become the first in the company’s history to recommend to the board appoint a non-family CEO. Harvard Business School Professor George Serafeim and TITAN former CEO Dimitri Papalexopoulos join Brian Kenny to discuss the case, “Transforming a Titan,” exploring digitalization, globalization, and succession planning of an established family business as well as how to accelerate low-carbon efforts in a carbon intensive industry.

In 2021, a breakthrough in sanitation technology – developed under the Gates Foundation’s “Reinvent the Toilet” challenge – stood ready for commercialization. The Single User Reinvented Toilet (SURT) offered an off-grid, self-contained system capable of processing waste, generating water, and reducing environmental impact. Turning this technical success into a viable product, however, meant confronting intertwined challenges around behavior change, infrastructure compatibility, financing models, and stakeholder incentives. Harvard Business School Assistant Professor Maria Roche and SURT engineer Dr. Shannon Yee join Brian Kenny to discuss the case “Toilets for the Underserved: The SURT Commercialization Challenge” and the central question of how to launch and then scale a technology particularly important for underserved markets, but not a lucrative short term investment opportunity.

After launching Wasabi Technologies, a successful cloud storage company, founder and CEO David Friend was ready to scale the venture rapidly. The company had focused primarily on direct sales, but an opportunity to pivot toward channel sales was on the horizon. However, making this pivot would mean changing its sales, marketing, and staffing strategies dramatically, and effectively veering the company away from its already successful course. Harvard Business School Senior Lecturer Lou Shipley joins Brian Kenny to discuss the case, “Wasabi Technologies” and the questions Friend wrestled with: Was channel sales the right play for the burgeoning cloud storage provider? If so, how should it best be implemented? They also explore ideas connected to Shipley’s new book, Unlikely Entrepreneurs.

Software startup InsightSquared had recently hit $2 million in revenue and secured an $8 million round of venture capital. However, the founders disagreed on the path ahead, specifically on the sales and marketing plan. Should they focus on a sales-centric approach to growth or a marketing-centric one? Which strategy was optimal for their venture’s next phase of growth? Harvard Business School Senior Lecturer Mark Roberge joins Brian Kenny to discuss the case, “InsightSquared: Developing the Sales and Marketing Plan” and ideas related to his new book, The Science of Scaling.

A bank’s decision to experiment with being more transparent with about credit card drawbacks might help customers make better choices, but would those choices come at the expense of bank performance? Harvard Business School Professor Leslie John joins Brian Kenny to discuss the case, “Commonwealth Bank of Australia: Unbanklike Experimentation” and ideas related to her new book, Revealing: The Underrated Power of Oversharing. They explore the benefits and potential drawbacks to the bank “oversharing” information with customers.

The U.S. Men’s Olympic speed skating team devised a new approach to the team pursuit event following their disappointing performance in the 2018 Winter Olympics. The team saw promising initial results from their innovations, but they faced a decision about whether to reveal their new techniques. The U.S. Team’s strategy was easily imitated if competitors witnessed it in a race, but it was a risk not to test it in competition before the Olympics. And, were here possible upsides to imitation if it improved the entire sport? Should they share their techniques, and if so, when? Harvard Business School Assistant Professor Rebecca Karp joins Brian Kenny to discuss the case, “A Winning Strategy: Innovation in Olympic Speed Skating.”

By 2025, the business podcast Acquired was getting one million listeners per episode, having doubled the audience year over since Ben Gilbert and David Rosenthal started it in 2015. And they’d grown without a strict release schedule or relentless optimization. Still, they felt pressure to scale—without throwing off their work-life balance. How did they determine a way forward? They join Harvard Business School Professor Shane Greenstein and host Brian Kenny to discuss the case “The Acquired Podcast: Scaling the Mic.”

In 2025, Golden Goose, the Italian brand known for its handcrafted, distressed sneakers, was at a crossroads. CEO Silvio Campara had grown the label from a cult favorite into a $650 million global force, but sustaining that growth raised tough questions: Should the company double down on sneakers, expand into ready-to-wear and accessories, or push into emerging international markets? Harvard Business School Professor Juan Alcacer and entrepreneur Alexandre Daillance co-wrote the case “Golden Goose: Reshaping Luxury.” They join host Brian Kenny to explore how the brand has upended traditional fashion norms by embracing imperfection, inviting co-creation, and redefining what it means to scale in the luxury world.

In 2019, Equitable’s CEO, Mark Pearson, set out to change how the 163-year-old financial services firm gets work done. He wanted the firm to speed up decision-making and empower employees through a flatter hierarchy, agile teams, and more opportunities to lead. Most divisions thrived under the new model. Others clung to old habits. Several years in, the effort sheds light on core questions: What does true cultural change look like? What makes it last? And how do leaders bring skeptics along? Harvard Business School Professor Das Narayandas joins Pearson and COO Jeff Hurd to discuss the case “New WOW at Equitable: A New Way of Working.”

In this special holiday crossover episode from Harvard Business School’s Climate Rising podcast, Professor Mike Toffel talks with ThredUp CEO James Reinhart about the company’s mission to extend the life of apparel and reduce waste through resale. As thrifting becomes more popular and circular business models gain traction, Reinhart explains why ThredUp built a national logistics and tech platform, how it collaborates with big brands, and the growing role of AI and automation in the industry.