It's like the classic used car market, though. We shouldn't necessarily expect to make our money back, but it's not unrealistic to think we will. If I sell a classic Mustang (apt scenario, I think you'll agree ;) ) I paid $35,000 for 10 years ago, assuming it's in exactly the same condition, I don't think it's poor form to think I'll sell it for roughly the same price.

New Kias and Hyundais wouldn't dictate the price I can sell my hypothetical Mustang for.

One thing's for sure though, it'll be interesting to see the effect PP's MM will have on existing games. But IMO there are some titles (like that and AfM, amongst a few others) that have been over-inflated for donkey's years. They're good games for sure, but have always been vastly overpriced.