What a great way to turn a good into something ugly - promotions. Commercialize anything and nobody will want it. Most books are written to make money for the author. They are gathering dust and offered at discount prices. Few authors are read after 100 years. Same with music.
And a great way to ensure something will die off is by not promoting it. If there is no interest, it will surely whither away and die on the vine.
Commercial support doesn't have to be a bad thing, and a spike in popularity brought us cartridges like the .480 Ruger, .500 Smith & Wesson, .460, etc.
