New games aren’t entitled to value holding. They never were.
Not every game is a classic or desired. If no one wants it, price drops.
Good games get lots of units made. If they’re easy to find, price isn’t going to rise.
Stern has often puts games back into production & the current scene of NIBNEWBS only buys new. They’d rather wait for a possible re-run than buy a used game.
New games have had QC problems like bad clear coat. That’s prob turning away buyers who normally would buy used versions of current games.