> I don't think it's about expense, it's more about hiding the fact that their catalogue is actually really small.

I agree with you for Netflix.

However, Youtube's catalog is almost certainly larger today than it was a decade ago. Even if you could somehow weight by quality, I think it would be hard to argue that Youtube's content catalog has gotten worse. Maybe average quality per video has gone down, but there is so much content on Youtube nowadays, assuming you're able to find it.

I'm not sure about Spotify.