Probably because it's very niche. Talking to many friends, and an increasing number of posts on various console subreddits, there's lots of comments from PC gamers that embraced the console life due to it's simplicity. This has increased since the PS5 Pro released - "Close to PC-level graphics, without the PC-level costs and mucking around with settings"

There is a certain appeal to this for many people that hacking it to run your own OS isn't really sought after.