Well, it's true that when I was at Mr P's, although its a very relaxed atmos and we had a lot of fun, we went in expecting to would walk out with pockets lighter but have a few hours fun in the process.
There was a mixture of people there, others clearly with the same attitude but a couple who were clearly playing for more than just amusement. I'm not saying that like it's any sort of shock, just walk
into the over 18s section of any arcade, but even a retro one.
As for the decline of High Tech analogue AWPs, that's been going on for years and anything with actual reels would seem alien to most other countries for the last 15-20 years+.
I don't know if it is nostalgia, or the perception of the public that somehow the screen can cheat the player quicker than the 'mechanical' reel that has made manufacturers hold off fully screen based machines until relatively recently.
One thing that's true though is that the analogue fruit machine market is on it's arse, with all the companies of even ten years ago first taken over, merged and then closed, pretty much Bell Fruit left now IIRC.