Not everyone gets to be the developer; the people the consumers cite when they praise good games. Some people are just really good at logistics. Or they know their market and how to bend it. These are the publishers, they fund, market, and distribute the objects that make the industry what it is. That is exactly what this medium is; an industry.
Every job doesn't get to be the selfless artist who takes pride in his work and gets to accept the love of his/her fans. In fact, most jobs are rather more subtle, even while being more profitable. True, you can't accept any praise for your work, in fact it's quite the opposite. But it doesn't mean they aren't artists too, out not for glory but wealth and power. If they can't be artists for the public, then they'll have to be artists for themselves. Building and destroying, molding the industry in a way they see fit, until it's a suitable sculpture.
Publishers do their job just as well as any other, but their critics are the money given to them for their work.