Those with good money management skills will be able to do this, but those with poor money management skills may not be able to do so because they tend to spend their money on things they want, which are usually only temporary and sometimes unprofitable in the short or long term.
Owning a business is a benefit. As long as we can manage it well, it will run smoothly and profitably. Personally, if I already have a business that's running well, the next step I'll take is investing.
Building a business isn't easy, and once it's up and running, maintaining it profitable and growing is also challenging. You're right that it requires skills to sustain business growth. Many people fail in business because they lack proper skills and management skills.
I've seen people I know inherit family businesses that go bankrupt because the heirs couldn't manage them well, and they even fail because they placed their trust in someone else. Yes, those people don't want the hassle of managing the business, so they let someone else handle it, and then they get scammed, which leads to bankruptcy.