This.
The value I got out of university was mostly not tuition, but I think overall, (very pre-pandemic) the whole package was worth it. I've learnt vastly more by reading, engaging with people, and doing both before and after university though, for much less cost.
I've also never been on a paid training or course that was worth the cost and didn't involve something above and beyond the tuition (networking, project based, access to facilities/tools/data, etc.). The only times this obviously isn't true are when you're gaining some required or coveted industry certification, and then that's only because of the value attached to it, not the value of the learning itself vs other ways to gain the same skills/knowledge.
The lesson for me has been that for any course or school there's got to be an expected benefit way beyond the perceived value of the tuition, and that most of the time this doesn't exist.
I think paid training in companies is likely as popular as it is mostly because it feels a bit like a vacation and most companies don't allow, or don't make it socially acceptable, for people to take sufficient time off for their own long term wellbeing.