Of course it's not ok. At some level getting rich is a life-or-death issue. How do I get enough money to retire? How can I possibly afford health-care? What if I or my lovely wife get cancer? The reality is, the later years of your life are going to be significantly more secure and happier if you make a lot of money.
All of the possibilities you mention are much more likely to be handled by a) Good budgeting b) A solid career as an employee or an independent contractor
The reason to start your own business is because you want the challenge, and the satisfaction of building something important.
If you have a desperate need to have a few million in the bank, your best shot is to to get a good job, learn about investment, and start living cheaply.