adamsapple
Or is it just one of Phil's balls in my throat?
No, it's quite different.
One, games leave gamepass. Two, if you follow the game industry closer than you do the tv industry, as many of us do, you will likely find games not on gamepass you're interested in. Three, if you really like a game - like lets say Age of Empires 2 - it's actually way way cheaper over time to buy it than stay subbed just to play it. You're not going to watch Silo continuously for months or years.
Keeping a recurring sub just to play one or two games is a fools errand, I don't believe that's how most people generally utilize them here, at least.