I have to say that since I've been paying for music, I've always had the one complaint: Why does the industry insist that each music portal have a fragmented, incomplete catalogue.
In a world where everyone pays for music, I suppose this makes sense, since to have access to the complete catalog one would need to subscribe to each and every service out there. The one exception was grooveshark, which had everything.
I think google may have succeeded where grooveshark failed, in strong-arming the industry to provide access to their complete catalogue. Originally I subscribed to youtube-red because I couldn't stand adverts popping up during video lectures. I suppose they succeeded in frustrating me.
But $10/month is the correct price point for an unrestricted music catalogue, and now ad-free streaming of other media is just a bonus.