A Blockchain Music ecosystem where artists automatically get compensated whenever someone violates copyright. Why hasn't this been done before?

Imagine an ecosystem where musicians choose to sign smart contracts where they are rewarded whenever a broadcasters such as streamers/youtubers shares their music.

I can't tell you how many time I have seen streamers and youtubers get demonitized when they unintentionally play a random song on their platform. Whenever a copyright forces a stream to close money is lost form both ends (streamer and music creator). I believe that upcoming artists would love to sign special smart contracts like this for another revenue stream.

However, for this to be feasible I understand that you would either need :

• A willing platform to incorporate smart contracts into their system

• Create an new platform for creators with this feature.

What's hasn't this been created yet?