I had a plan years ago to have one of the storage buildings (actually a shopfront) converted into an old style Diner (fake) with a wall full of EMs and SS machines. I planned on having 20 machines set to 20 cents a game and only have the place opened on Weekends. As I started preparing the machines, people showed interest - but the "interest" was in BUYING the games, not playing them on weekends. Out of the 7-8 games I actually finished, only one was not sold. It was clear to me that this generation want the pinballs in their gamesroom, not in a "Parlour" like the old days. I "hope" it would make a comeback, but I don't think anyone will ever try it on a grand scale.
The home market is where the future lies. At the moment, there is more supply than demand. Collectors and enthusiasts are a LOT MORE fussy and knowledgable than they were 5 years ago. Gone are the days of overpriced pinballs.