Mark Cuban had both working parents. His mother did various jobs, his father made about $40k a year doing car upholstery which would have been in the 1970s/80s.
So his father made approx $120,243 a year in today’s money.
Particularly with his mother’s added income, that would be a middle class family who would be able to afford to sent their kids to college, which they could and did do.
Good solid American middle class dream. Not rags-to-riches but likely what you would need as a minimal cushion along with being a hustler you could make your way to success.
That is, there would at least be a couch for you at mom and dads house if you fail because they have their own act together and are stable.