outdated trend effect

the outadated trend affect is when a "trend" becomes outdated and no longer valid. take a game for an example, lets say someone is playing a game that is not popular anymore, when a person sees that, they will have an almost exact reaction as the following: ooooooooohhhhhhh you're playing amogus, you're living in the passssssssst.
someone could like to play said game, but an effect similar to peer pressure will occur, the person could stop playing the game, that they could have spend a large amount of money one, such as any nintendo game. with how fast trends get sent to the shadow realm, someone could have just bought something, but its already invalid.