Aside from collectors pinball is almost dead in the US so the idea it will be able to uptake in a culture that doesn't have the 70 year history of flipper games seems unlikely.
The recent uptick in location games has been nice but it's a small blip compared to the heyday of the mid-90s. I don't see a push into China unless a big pop culture element came with it (like a movie featuring prominently a pinball machine) and made its way over there. But I mean that's just as unlikely given Hollywood studios are risk averse.
Anyways as yourself the reverse; when are pachinko machines gonna catch on here? Never.
