A pinball arcade recently opened in Tucson. The owners both work for the same company as I do and say they didn't do it for the money. I believe them, since I know they do alright at their day jobs. They have ~25 machines and wanted to have people exposed to playing them. They rented a garage building downtown right off the trendy/hippy/hipster street and are only open F/Sat/Sun evenings. They've had a ton of people come in and just started doing tournaments. I played in the first one and it was a lot of fun.
Anyway, I understand how something can be successful and still not be able to support a family from the earnings side. Paintball to pinball, it's possible.