You consume in a slower manner.

You use an example of your ability to stream a thousand tracks in a single day if you wanted to, I don't have the same aspirations, so I'd also not pay thousands of dollars up from to kick start it.

To answer your question of how do I curate a library, legally, is just over time. I have a lot of musicians I like, and when I find them, I purchase their music, and I listen to it.

I do it less than a thousand times a day however. But I've been at it for thousands of days.