You've received some downvotes (perhaps because this read as being too flippant?) but I feel like you've covered it perfectly. The era where cable TV became truly heinous (nothing interesting to see, way too many ads, etc) was also the era where it just wasn't necessary anymore. While you have it it feels like it'd be hard to replace, but let's be honest: It'll take maybe a week of getting used to it and after that you won't miss it.

If subscription gaming gets this bad, it'll go the same way. In thirty years it'll be dying a slow death because fewer and fewer people use it and most people will have moved on to whatever replaces it. After they've spent another ten years dying there'll be the inevitable Netflix (i.e. streaming TV) moment, but for streaming games. Wonderful, but ultimately just the same thing but with time rolled back fifty years.

I guess what I'm trying to say is it might (probably will) go wrong, but nobody will really suffer for it and it'll fix itself given a little patience.