Jukeboxes and pins are two different animals but the nostalgia factor built into both and the age demographics are similar. 45s made the 78 juke obsolete but some 78 models were still very collectible. The download box might have made the cd box collectible except they didn't have a chance. Most cd boxes have been ripped up and modded into download boxes by installing kits.
If pinball can't get back into the mainstream like it was at its zenith then I still worry about its future. There were days when you didn't have to hunt to find a game on location as they were everywhere. Kids built memories and now as adults we want games in our homes. When we are gone will our kids want our games? Will they want new games? Only time will tell.
Pinball has evolved into a market much like Harley motorcycles with a factory turning out a few models, with different trim, and a huge aftermarket for add ons. In my opinion this move may have saved pinball by injecting the cash needed to keep the companies above water. Remember I starting buying pins when WMS was still making new ones At any rate I don't look at pins as an investment. I look at them as entertainment that I get to enjoy over and over like a classic car, boat, etc. if they go up in value great. If they don't that's fine too. I'm not gambling with the rent money lol.