How about you build a platform that let's us purchase the music we want?
That largely exists now.
Correct. But none of the most popular sales channels were created by the record industry. (iTunes, Spotify, etc)
Indeed, and for the most part they were dragged to it kicking and screaming, as it were.
I worked in anti-piracy for half a decade...this is more or less probably due to diminishing funds for DMCA factories (which the RIAA contracts) and their overall lack of coherent success on the prosecuting of half the globe for downloading porn and pop albums.
Who kidnapped RIAA's CEO and what have they done to him?
He's not advocating for less anti-piracy, he's demanding more aggressive laws than the DMCA. He believes the law should make it easy for him to shut this activity down regardless of whether it is actually feasible without gross interference with other rights.