Just going on the sheer number of big name artists using Schecter, I've got to think it's not a lack of famous players that are a problem for them - though a lot do seem to be hard rock or metal players.
I don't think I've seen a Schecter in a physical shop but still, I own two and a good friend of mine owns another herself. Mine are a Riot 4 Aurora Burst and an SLS Evil Twin, both lefthanded. They're both great instruments, particularly the Evil Twin. My friend has a C-5 GT in purple and it looks and feels amazing (for a righthanded instrument).
I guess the reason so many manufacturers build Fender-esque instruments is because those general shapes are so baked into the cultural psyche that people expect them and so it's a relatively easy money-maker, especially if you can do it cheaper and with just a touch of modern features to put your own twist on proceedings.