Already happened in Denmark
In Denmark they introduced a "media license" which has to be paid by everyone with an internet connection faster than a certain level (I think it's 256kb/s, but I'm not sure). That's because the public service TV/radio company decided to send its programs over the internet.
Made a lot of people angry - especially those who didn't want to see TV and didn't want to pay a license, but now had to simply because they had an internet connection.
The same is happening in the mother country I see. All the same arguments about "logins" etc fell on deaf ears - despite the fact that pay-to-view internet tv can apparently cope.