Owning a business is not the same as managing a business. Management is administrative labor, and is necessary, but the actual ownership of companies is in a tiny number of hands that work only when they choose to, on their own terms.
The alternative system is socialism, where production is collectivized, and run to suit the needs of society. We can reduce working hours this way when we are not working to fill an endless pursuit of profit and capital valorization, which gives us time to pursue human relationships, educate ourselves, and advance in our hobbies.