I wish this were true, but it not. There is not enough profit in pinball for it to be a viable business.
I had a couple of locations with machines, it wasn't even close to worth it. Even if it makes 200 a week which believe it or not is good earnings, with the initial investment of machine,insurance, permit, time to clean out and count the money, maint. And let's not forget breakdowns, and repairs due to abuse. It's just not worth it, the money is in selling them to the collector/home market period!