Episode Details

What happens when an entrepreneur spends decades helping founders transition, scale, and protect the businesses they've built?

In this episode of The Parallel Entrepreneur, Mark Cleveland sits down with Douglas Song, founder and CEO of Protos Capital, for a wide-ranging conversation on independent sponsors, lower middle market acquisitions, leadership, succession planning, AI, uncertainty, and what founders often overlook when preparing for growth or exit.

Doug shares lessons from dozens of transactions across multiple industries, including how he evaluates leadership teams, why organic growth still matters more than acquisition rollups, and what makes a business resilient in a world filled with constant disruption.

But this conversation also becomes deeply personal.

Doug reflects on immigrating to the United States from South Korea as a child, watching his parents build a life through entrepreneurship, and how that experience shaped the way he thinks about people, stewardship, and long-term value creation.

The conversation also explores:

• The rise of the independent sponsor model 
• Why succession planning is becoming urgent for founder-led businesses 
•  AI adoption in lower middle market companies
• How great operators handle black swan events
• Why culture and people matter more than spreadsheets 
• Building blue-collar entrepreneurship pathways for the next generation
• The difference between growing fast and growing well 
• Legacy, learning, and designing a life with intention

Whether you're building, scaling, buying, selling, or simply trying to lead well through uncertainty, this episode offers a rare combination of strategic insight and lived experience.

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About the Host
Mark Cleveland is an entrepreneur, investor, and advisor who works at the intersection of multiple ventures. As the voice behind The Parallel Entrepreneur, he explores how founders build aligned businesses, strong teams, and sustainable momentum—without forcing themselves into a single path.

About the Guest Douglas Song is the Founder and CEO of Protos Capital, an independent sponsor firm focused on lower middle market businesses. For more than 25 years, he has worked alongside founders and management teams to help businesses grow, transition, and navigate acquisitions with a people-first approach centered on long-term value, stewardship, and community. 

Links & Resources 

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Key Moments 

00:00 Why founders need transition plans, not just exits 
00:47 Introducing Douglas Song and Protos Capital 
01:30 Entrepreneurship Through Acquisition (ETA) explained 
03:00 Independent sponsors vs. traditional operators 
05:00 Why operators matter more than dealmakers 
06:01 The coming succession wave for founder-led businesses 
08:15 What "another bite at the apple" really means 
11:50 How Protos measures investment success 
12:40 Defining the lower middle market 
13:50 AI adoption in family-owned businesses 
16:30 Using AI during due dilige