I don't think anyone has exhausted the range of sound possible in a conventional rock band, but people do become slaves to their own easiest techniques.
For less than the cost of a Big Mac, fries and a Coke, you can buy a loaf of fresh bread and some good cheese or roast beef, which you will enjoy much more.
Find people who think like you and stick with them. Make only music you are passionate about. Work only with people you like and trust. Don't sign anything.
