Sure they're not all making millions, but I'd rather see an industry with more players each making less money (i.e. more choices for me), than a smaller group of pre-selected artists (and the machinery behind them) that take home tons of money but put out less varied produced-by-committee content designed for mass consumption.
So I think it's arguable whether it's better or worse for the industry, but it's definitely better for the consumer.
Just because the old toll collectors, middlemen, and gatekeepers are worse off doesn't mean that's true for society as a whole.
The purpose of copyright law is to ensure good amounts of production for the public overall. It is not there to help certain rent-seeking companies make money.