I don't think it's quite that simple. I think there are people who are, by nature, inventors. They like creating "better mousetraps". There are also people who like to find ways to make money.
Probably the best business partnerships are when the two get together. Apple in the early days is a perfect example. Woz was the inventor and Jobs the marketer.
When we have people who ONLY are in it for the money we get an form of rampant capitalism, much like we have now, where marketeers CREATE a demand and the products may often be junk. These are the products that leave a bad taste in people's mouths because they know they have been burned.
So what we have then is too many marketeers and not enough inventors.
How this can relate to photography is that we end up with too much whiz bang and not enough real art. Buying the newest toy doesn't necessarily make you better, just faster. If you're good, that's a good thing maybe, if you're lousy, you just churn out more crap, faster.