With technology enabling more peer-to-peer connections, the game changes. If you're a productive plumber, why join a company and work for a salary when you can work directly for the consumer and enjoy higher margins (and higher risk)? However, as time goes on, more plumbers will make the same decision and enter the market. This results in a more efficient economy: more people can get plumbing at lower prices, and more people can work as plumbers.
But what if some business owners cost structures (due to mismanagement, poor productivity) do not result in good wages? (eg, XYZ Plumbing struggles to stay in business while ABC is doing just fine). Or what if the market forces end up in a clearing price that's too low? In today's economy, it's considered normal for some businesses to shut down if they cannot make money (know of a restaurant that has closed due to COVID?). But do we as a society want individuals taking on that much risk? If not, how can we insure against that risk?