> people sharing knowledge on the internet without expecting anything in return
Imagine: creative person shares their output with friendly-apparently-non-profit website X, then behind the scenes company Y scrapes and uses it, then sells a closed-source product based on it to Big Corps Z1 - Z100.
Y and Z both get rich. The original creator? Gets nothing, and they may not even know what's happened.
Maybe I'm getting too old for this, but "sharing knowledge on the internet" isn't what it used to be. Neither are licence agreements :/