That just changes the boss to clients, investors, business needs.
Plenty of company owners work harder for longer for higher risk. We get a job so we don't need to deal with most any failure case more dramatic than getting sacked (which has some obvious mitigations).
There is a selection bias - the type of person to run a business is usually highly motivated and they often sell the dream about how amazing their life is (which it often isn't).
You're going to college for a few reasons at the very minimum. Use those to guide you before you find something else later on.
I always wanted to start a company, but the motivation usually fades away when thinking how it could really be beneficial for humanity. People buy useless products, and unfortunately that's where the money is in, but not the motivation for creating it.