Quite. The big gain of copyright was to liberate artists from that to some degree and put them on an economic footing of productivity, where their work could be valued for its commercial potential, with the reasonable proviso that people who wanted to enjoy it would pay to purchase it in some form. Despite the flaws of the publishing industry this worked pretty well and there was a cultural explosion that paralleled the industrial revolution.
In HN debates on the subject, I've noticed a small but persistent core of resentment for professional artists, based around the idea that artists shouldn't be so greedy as to ask for money because being an artist is fun. And while it certainly can be, a lot of the time it's a tedious grind same as any other line of work. I find this analogous to saying software engineers shouldn't be paid because they like playing with computers.
I read the original Pomplamoose piece and while I respected the position of 'hey we're a startup, and while we haven't made it we are making it, plus being in a band is awesome' it nonetheless radiated an air of desperation. The cold hard reality is that you can do a 2 month tour, play to packed houses of paying fans, and still lose $10,000. Criticisms that they paid too much for the stage show are misplaced; it costs money to hire those things, and you need some of those things so that people say your show was fun and exciting rather than dull and boring. People go to a concert to be entertained, after all. Traditionally, bands signed deals with labels because labels have the capital and know-how to promote music, much as studios have the capital and know-how to put out films and so forth. It's very very hard to build up that capital organically, and it's also very hard to produce a marketable product without a capital investment.