They view creative people the way a miner views a resource in the ground: as something to be strip mined and then discarded. I've encountered raw contempt... in a sense they are jealous of the ability of creative people to be creative, and this fuels their desire to co-opt it and take some of that glory for themselves.
But, part of the reason there's so much of this is that creative types are often horrible businesspeople and have no desire to learn. Instead, there is this myth that you get "discovered" and then someone else does the business for you.
Reality: you get "discovered" by a predator. If you don't want to be prey, you have to do it yourself.
Edit: this doesn't mean you have to be a 100% indy do-everything-yourself self-publisher or bootstrapper. But going into things with your eyes open, reading the fine print, and thinking like a businessperson is part of doing it yourself. Businesspeople do go into business with other people and other businesses, but they don't think "wow! I'm getting discovered, now I'm set!" They think "hmm... what's the value proposition here?" and they run spreadsheets and they look for hidden places where they might lose value or not get enough value for their money. Then they push back, and negotiate. Think like this or you get screwed.
Oh, and if it sounds too good to be true it probably is.