> By the people who enjoy the authors work.

They'll just copy it, much like they do now. See all those torrents? Oh, that's obviously people copying things they hate!

> I even hear live performances are very important for many artists' income.

Live performance of software. Good one! Let's have book-reading parties too! And we'll get rid of movies and go back to opera!

> complaining about copies feels a lot to me like getting angry because someone said a one's fanart sucks

Why wouldn't it? Step back, and pretend you've just spent several months writing a piece of [software|book|music|etc], which you now attempt to sell. Unfortunately, nobody is buying it. But behold! You look on the web and discover that everyone is copying your work. It's a huge hit, but you've made a pittance!

How do you feel?