You're saying this happens because of Sony's success, but that's not necessarily true. It happens to Microsoft, and it happens to every major publisher — successful or not.
At the end of the day, most closures come down to the financial performance of the games being developed. I don't agree with many of these decisions, but people love to frame it as a black-and-white issue with zero nuance. No grey area whatsoever.
Take Sony, for example: they funded Fumito Ueda's game for nearly ten years. Ten years. Not a single nerd gave them credit for that. They're one of the few publishers willing to back lesser-known studios until they get their footing, and they don't even demand exclusivity — look at Stellar Blade, Kena, even Kojima's projects. Yet you barely see any praise for that on gaming forums.
And of course, like any publisher, they're not innocent or free of mistakes. But at the very least, we should balance criticism by acknowledging the positives as well — something that rarely happens here or on gaming forums in general, which tend to drown everything in negativity. And again, this applies to everyone, not just Sony.
What I'm trying to say is this: as a consumer, Sony has given me a great platform. One that gets all the big games, has solid online services, future-proof tech, VR support, and so on. People even mocked them for using a standard M.2 drive instead of a custom solution — meanwhile they're the only console maker still offering physical media on all their systems. They're selling their hardware cheaper than every equivalent option on the market: PS5 Pro vs Series X, PS5 vs Series S, even compared to Switch 1/2.
So yes, they're not perfect. None of them are. But in terms of overall value, features, and consumer-friendly decisions, they're the best of the big three.