I think even if we heavily narrow the prediction to AAA games only (ignoring not only the indies, but all the mid-tier studios like Larian or Obsidian as well), it won't be anywhere near true. We're already pretty deep into the era of the "live service" business model, and it's big but it's not all-consuming.

Look at everything Nintendo for starters, look at the Total War games, all the focused narrative action-adventure games. None of this is going in a direction which will exclude offline solo play.

If the prediction is just EA and Ubisoft and maybe Activision, yeah ok, that's a little more realistic.