Im 21 and I own 4 pins. None are the new big dollar pins, but it's still something... A lot of my friends doesn't even think of pinball as something that's still in this world.. However they all enjoy and gather around when they are at my place... But paying big bucks (Hell they think my pins are expensive(and so do I)) is something that I don't believe they would do.
I don't know if video game themes would get them to play the pin.. Why not just keep playing the video game? It's also a matter of space, many young ones doesn't have a house either, and jamming a few pinball machines inside an apartment can be tough.