I play single games for years with a bit of other games mixed in. I played Diablo 1, 2 and 3, World of Warcraft (already a sub, of course), Minecraft, and Skyrim for many years each. You could maybe put Team Fortress 2 in there but I didn't continue going back to that well nearly as long as the others - I hate lootbox shit and I miss the days when skill and strategy was the only difference between players. I would totally play TF2 vanilla, though.

I'm sure I will continue to play Diablo 3 (4 does nothing for me) and Skyrim for years to come. So we do exist, however we are probably an unknown and unserved group since we don't tend to pour a bunch of money and time into new games. I do have 800 hours into Baldur's Gate 3. I'm going to regret having that on console instead of Steam, I'm sure. Probably wind up buying that one twice.