Well you should. Because regardless of if Epic bought bandcamp or not, the fee that google charges would come directly out of musicians pockets.
Regardless of who is running bandcamp, that feel would directly cause artists to not make as much money.
> I personally feel that 30% isn't even outrageous
Ok, and now the end result is that fee is coming out of artists pockets.
If you don't care about artist compensation, and want them to make less money, well fine. But don't pretend like you are on the side of artist compensation.