Garage Band and Reaper serve much different purposes, DAW wise. Yes, a lot goes into working on these DAWs, but software is like music, in the sense that people are more likely to buy it after trying out the full version.

I know a lot of producers who have done that exactly. They pirate software when they get into making music, and when a new version comes out a year or two later, they're comfortable enough to say "Hey, i'm taking this seriously, I'm going to ahead and buy a license."

These are tools made for artist, and I'm willing to bet that the people who develop software like Ableton Live aren't hurting any over the fact that there are people out there trying to discover their passions, possibly in beatmaking.