Car manufacturers don't mind giving up control over things like the entertainment system provided it works better than what they can do.
A number don't like it, especially dealers. The base unit is a $50 piece of junk, the $500 option cost them $100, and the $5000 option cost them under $1000. $4000 extra profit per car is a nice thing.
I'd re-define "millionaire" (as in the rich with no money cares rich) to be people with unearned income greater than a million a year. That's the level of comfort people think of for millionaire. The millionaire next door type (I know quite a few) don't live that well. A tiny 2-bedroom house, raising one child, one new car every 10-20 years. Saving most of their disposable income. Having just enough so that when their health fails, they can go into a nice home, rather than the worst ones (and there's quite a difference). Maybe leaving a little for their child. Of course, the one I'm thinking of managed to put their child through medical school, paying her whole way, so she got her inheritance early. Each generation better off than the one before. Not like my father who left us nothing. Well, piles of bills that will never be paid. But my plans never counted on that anyway.
It's simple. It just takes a plan, and some self control. Why aren't you a millionaire?
People have no control over that.
They vote for the laws and politicians that spend enough to require massive tax increases. Of course, the solution is to move. I did, and it was a great thing. Lower taxes and more services.