Helping someone do legitimate commerce online isn't making the internet worse. Quite the opposite.
> sharing of information
... These features aren't really extricable from each other in any society where money exists
I am 100% certain that people have made significant revenue facilitated by their ability to look things up quickly and efficiently on Wikipedia. I know it has certainly helped me do my job. The fact that that revenue hasn't flowed directly to Jimmy Wales's institution is because nothing about commerce guarantees that everyone involved gets a cut of the money flowing.
Imagine how much money they would make if they started running ads though.