I have a slightly different take.
I would say that people want to play pinball.
The reason you don't see pinball everywhere is because it breaks. It breaks a lot. And when it breaks, it's not much fun.
If we had a completely different repair profile, an operator could buy a pinball, and have it making money for thirty years.
As it is, pinball doesn't make sense financially.
You can do what Mark of Marco Pinball parts (Miss you Mark!) told me:
Buy a pinball, operate it for two-three years, don't even fix it, sell it at an amusement auction for almost what you paid for it, or more than what you paid for it.
The pinball bars are operating on a long-time business reality in the amusement industry:
Anybody can make money for three years.
After three years, your machines start needing a lot of repair, your customers want a completely new set of machines, you haven't paid for your first set of machines and your business is in trouble.
That's the future for a lot of these places you can go and play all the pinball you want.
But people want to play pinball.
So... yes! Pinball is on a (temporary) high, but it's also got 'legs'.
It will continue to be VERY popular... when there are people who are passionate about it.