If you'd followed Reznor on Twitter, you'd know that he stopped tweeting because of a particular stalker who made trouble for him.
And the "music industry that has lasted almost since the start of recorded music"? No, the current exploitative model grew in the 50's and 60's - recorded music dates back 100 years. The music industry goes back even further if you include publishing, and performance for pay has been the standard since the first ape said "Ook!" in front of the fire.