I would read "digital transmission service" as a service offering digital transmission, but that's not what the bill says. It says "the term ‘digital transmiss

I would read "digital transmission service" as a service offering digital transmission, but that's not what the bill says. It says "the term ‘digital transmission service’ means a service that has the primary purpose of publicly performing works by digital transmission;" which to my eyes does not clearly restrict it to platforms as opposed to, at, a YouTube channel. Unless, as you say, there is a restriction somewhere unspecified on what can be meant by "service".