I was answering the second question, not whether free loading is an actual problem. The answer to that is of course up to the original author, who is entitled t

I was answering the second question, not whether free loading is an actual problem. The answer to that is of course up to the original author, who is entitled to use any license they like. Regarding your "peek and return" scenario, GPL actually lets you do that, and I wouldn't consider you an actual "user".