Consider that I could pirate a movie, or I could pirate it and pay the creators directly, leaving out the distributors the creators contracted with. I fully agree that the second is slightly more ethical than the first, even though the creator agreed to neither. The problem occurs when some Tube site distributes the videos without the creators' consent, collects money from the viewers, takes a cut, and passes the rest to the creator. The Tube site is ethically wrong.