Fragmentation will destroy this as a 'good' scenario.
Think it's bad having to choose between 4 major platforms? (PC, PS, XB, Ninty)
Take a look at video streaming. Once upon a time you had a cable subscription and a VCR. Then the VCR turned into a DVR. But basically you had local, plus add in whatever package you wanted for either basic stuff or some premium channels.
Then Netflix came about. Mass amounts of stuff, cheap sub. And because video streaming can buffer and doesn't depend on latency, it was golden.
But now fragmentation has struck HARD. Want to keep up with all the hot shows? There's great stuff on :
Netflix
Amazon Prime
CBS (!! Lol)
Hulu
HBO Go
And now Disney is effing things up further with all things marvel, Pixar, star wars, etc, with exclusives out the butt
And Apple is starting a major exclusive service
That's just the tip of the iceberg.
Stadia won't keep up very long with the industry. You want EA games? Origin streaming service. Activision games? Their streaming service. Ubisoft games? Their streaming service. Nintendo games? Lol, probably not offered at all. And on, and on, and on.
Also, I work in the enterprise network industry. 5G is the biggest scam to come down the pipe in memory. The frequencies freed up for it are garbage for distance and stability, meaning you have to have a crapton of base stations WIRED, like dozens per city block, to not have a shit experience. And the cell companies will drastically oversell the bandwidth by density, because they're capitalists, and Ajit Pai and the FCC, as well as our corporatist government are fully bought and paid for by the most powerful corporations already. Caps, spotty coverage, massive fluctuations in latency and bandwidth, and shocking performance penalties when it's raining, or someone drives a panel truck past your house, these things will be commonplace. I've also seen several of the maps for NOC to node matrices in a couple of metropolitan areas, and they're already cutting way back on optimal wired nodes, choosing instead the easy route of using mostly 5G repeating stations to blanket areas, which has severe negatives with latency.
Ironically, having the phone zombie horde move to New iPhone and Android models for 5G may free up the LTE frequencies a good bit lol.
Game streaming is going to take a while to get correct. It will start out an interesting niche that only works in ideal conditions, and offers an okay selection, then it will turn to garbage as the distribution model fragments to hell, then eventually down the line consolidation will improve things somewhat. As some major actor in the video streaming wars will figure out, probably Disney or Apple, once they buy up enough of the market, fragmentation will finally dissipate, but be replaced by monopolistic tendencies.