What's funny is that Sony has done this before![0] I've had a personal boycott against Sony products due to this.
"The feature was controversially removed by Sony since system firmware update 3.21, released on April 1, 2010.[2] A class action lawsuit was filed against Sony on behalf of users, but was dismissed with prejudice in 2011 by a federal judge. The judge stated: "As a legal matter, ... plaintiffs have failed to allege facts or articulate a theory on which Sony may be held liable."[3] However, this decision was overturned in a 2014 appellate court decision[4] finding that plaintiffs had indeed made clear and sufficiently substantial claims. Ultimately, in 2016, Sony settled with users who had installed Linux or had purchased a PlayStation 3 based upon the availability of OtherOS."
[0] https://en.wikipedia.org/wiki/OtherOSI boycot Sony since they blocked my PSN account, which got hacked due to them! Purchases I made are not available, ... I really took a disliking before when they refused to fix my Vaio laptop, ... this was the last drop!
Yep. I had tons of Sony games across the first three Playstation consoles. I was a grad student with a PS3 at the time and I actually used Yellow Dog Linux on it as a computer to write papers when my laptop broke. Then the update came and I chose to ignore it, but that meant I couldn't play online games. Soon new games required a firmware update (still remember putting in the Dark Souls disc and being stunned I wasn't allowed to play it!).
And with games it's just getting worse (Sony announced they won't make discs starting 2028; the Switch 2 takes carts but very, very few games release on a cart). If you care about control over the games you purchased, if you care about going back and playing older games, then the only choice is to use platforms that are DRM free. (Or, well, non-legal means.)