Also, most people don't have the luxury of 'capital light.' When small businesses fail, families usually suffer. That is part of the game, and its worth talking about once in a while, in between articles about guys that hit it big.
I have a lot of sympathy for old-school businesses that need a lot of operating capital. Putting your house in danger to support your business is a choice I hope I never have to make. In my case, that would essentially be the same as putting my marriage on the line.
Everything has a lifecycle, businesses do too.
Any business that has generated money over its lifespan and has employed people and paid them is by some measure a successful business.
The timescale at which that cycle plays and the size of the business are not relevant.
His average contract was about 100K, he lost control of his cash flow in the worst recession in at least three decades, perhaps six. He must have done a lot of things correctly to run a well respected business for 20 years, I don't understand the strongly negative tone of the article.
His conclusion "He is no longer a business owner, but I suspect he is doing what he should be doing" implies that someone who ran a business for 20 years with 40 employees wasn't cut out for business.