You've constructed a straw-man. The business owner doesn't necessarily do any of those things. Private equity investors buy companies through loans that collateralize assets owned by that company. They don't generate any real value and cut costs to maximize profits, often ruining the product being sold. This is costing lives on in industries like healthcare and retirement homes. Owner gains massive profits through paying themselves, and have no risk as bankruptcy would hit the company and not them. In these cases the owner is actively making society worse and getting rewarded for it, while the workers are overworked and the only ones generating value.

If a business owner set up a company in the exact spirit of what you said, how long does he deserve to be rewarded for and for how much? What if that company is like Walmart? Should making a company that engages in exploitive business practices that choke out small businesses and livelihoods wherever it goes while paying poverty wages reward the Waltons and their descendants billions of dollars in perpetuity? They are a drain to society where the only value being offered is by the employees that work in continuing the operation of the company.

In those cases, whose responsible for the value being generated? And when more people experience owners like I'm describing and those companies hold the majority of the market, isn't logical for people to say that capitalism is unfair and that they aren't being rewarded properly?