The Grammy's and all award shows - especially "industry" award shows (Emmy/Tony/Oscar) exist on how much you buy their industry myths - movies themselves are a creation of myth industry by definition so that's why we still give a sh it. It's a lie but it's an exotic one at least.
The Grammy essentially exists in a parallel universe of the real world by arguing everything is part of the same industry. Lady Gaga and Adele do not exist in the same world as say Alejandro Escovedo so right off the bat the "industry" is a lie because Escovedo exists in a far different world from many other acts.
It maybe reflected a pop culture industry at one time (doubt it) but Rock, which dominated the culture for a long time splintered itself in odd ways after like '68 (?) and Punk shattered the splinters. By it's very nature Punk allowed, even encouraged people outside the industry to create, release records, tour and thrive.
So, the Grammy is always looking at what it calls the "industry" itself, when, for music - all music now not just Rock - the most exciting music is where you're not looking, and outside the industry definition.