One of the Reaper devs once said on their forums (or maybe it was KVR) that they never want to add anti-piracy measures to Reaper because it's just a cost-center for development with no real payoff. It can potentially hurt paying customers, and it almost never converts pirates. If someone doesn't want to pay, music software is easy to pirate. If it's somehow not easy to pirate (Cubase was crack-free for several years), there's so many competing products with the same utilities, they will just pirate one of your competitors.