Crowdsourcing hits signal and bestseller lists

How many people are streaming themselves live now on platforms like youtube, Facebook, twitch... ? I mean all these live streaming platforms even porn live cam platforms.

How many of them are playing music live?

haven’t we a good signal to know what music is consumed by people?

isn’t it a good way for the music industry to get tracks that are hitting?

hits highlighted by real people, not radios and music TVs.

The same can be done with books so the New York Times bestseller list is dead.