While not perhaps the best argument is the private equity provides liquidity for founders that want to exit. If you started business X, you’ve grown it for 20-40 years and you want to retire, selling is typically the answer. Let’s say the business makes $1m/yr after tax cash flow, PE might buy for $10m, besides PE there aren’t a bunch of likely buyers for your business (of course maybe there is a big competitor, and maybe you could sell it to an employee (but they probably don’t have the money and would need you to seller finance etc)). So for entrepreneurs with a successful small business (say $2-5m+ of ebitda) selling to private equity is the clearest path to a liquidity event for them.