Have you ever tried to Kayak on the internet? You have to buy a camera and be entertaining in your videos. In general no one does that unless they are getting paid. So you either Kayak, and don't plaster it all over the internet or you try to get paid for it. Same goes for pretty much every other hobby, doing it is fun, doing it "on the internet" is a job.
I wouldn't even blame the internet for that, doing something in a way that is interesting enough to be shared is hard work.