Back in the days in France, pinball were a standard part of a Café, usually a couple and a foosball table. I don't remember arcade rooms being full of pinballs, especially when Sega started coming up with some dedicated cabinets that were making money and taking tons of space. This came very true when Daytona USA came out, 4 SD machines lined up everywhere, and coins being dropped in all day long.
At the same time cafes became more like restaurant and less of places to drink, so table space became much more valuable which put the last nail in the Pinball's coffin.
Truth is at 1$ a game for an 8k machine, I still don't think pinball is a very good business, but is surely is tons of fun !