[johnnyanmac]

That is a big factor. I believe over half of the top 10 most played games on steam at any given time are 5+ years old. GTA V was played across 3 generations and its still in the top 20 most played games.

Market's being captured, and there's less to appeal to when people are stuck in a service bubble instead of moving on. That's a big part of why consoles are stagnating in Gen 9; economy and a lot of people are fine with PS4's, which still is getting new games.