That (ancient) cartoon made me ponder Gary Larson. I found this in Wiki - and hadn't heard about it before:
Online presence[edit] Since 1999, Larson has objected to his work being displayed on the internet, and has been sending takedown notices to owners of fan websites and users posting his cartoons.[24] In a personal letter included with the requests, Larson claimed that his work is too personal and important to him to have others "take control of it".[25][24] In 2007, he also published an open letter on the web to the same effect.[26] Larson has been criticized for not providing a legitimate online source for The Far Side series and negatively compared to cartoonists who have embraced the internet.[27]