Because only a certain few folks have access to DALL-E 2. I haven't got the invite and every day the ideas I was going to run with are already being done by others. Sure you can still do it, but it's not the same as a frontier where you can get the high, success, cash and fame out of a lot of easy ideas by being the first to do them. Eventually it's just a tool and you find a harder and more obscure niche to fill with it, despite how magical it is or how it makes your life/work potentially easier.