I can't speak for all trades, but in my experience 'owning a company' and 'high quality of life' rarely go hand in hand. Owning a company is hard. It's a 24/7 job where you are managing customers, employees, accounting, etc., and you can hire people to help but ultimately it's on you if someone screws up and orders the wrong cabinets.

I'm happier working for Big Corp in an air-conditioned office.