Personally, I think the bubble will burst soon.
Not many folks left that actually have a life connection to slot machines, penny scales, candy machines, gas pumps, signs and etc. They are big, heavy, take up a lot of room and mostly don't function like they were designed to anymore because they are obsolete and become decorations. I turned 16 in 1987 and have very limited experience with 5 footer gas pumps much less a visible. I have experiences with juke boxes but I'm 53 now and the generations that follow don't seem to be interested in these things.
I also believe that the EV "revolution" has begun and eventually, there will be very few places to actually gas up a classic car. So there will probably be a bubble burst in the classic car segment when the Boomers and older Gen Xers die off.
Who knows tho??