They do have the right to try to circumvent what your browser does. They're not even circumventing it by trying to disable stuff in your browser; they're just c

They do have the right to try to circumvent what your browser does. They're not even circumventing it by trying to disable stuff in your browser; they're just changing their delivery mechanism. It's semantics but in reality they're not actually messing with your computer. The alternative is revoking your viewing privileges without having watched an ad for the video you clicked on, which they both morally and legally have the right to do if you decide not to pay for the service you're consuming.