It is different though because theft removes the original item, while piracy is sharing a copy of it.
I don't agree. For many people, it's the only way to access TV. Wide access to broadcast media is a basic right, not a luxury. Some would say (me, for example) that it's neccesary for the proper functioning of civic society.
Meanwhile I note that free-to-air TV has been in decline for over a decade, at least in the UK. Cable and satellite services have been stealing the broadcasters' lunch. BBC News has an ever-shrinking circle of reporters (which they nowadays refer to as "editors").
I have no use for a streaming "package"; I don't watch sports and athletics, vintage sitcoms or new-release movies. I have a Sky dish and DVR, with the basic package. I gather Sky want to move me over to streaming, which would mean I'd have to upgrade my internet service.
Which seems like a very strong claim.
If anything I'm half-expecting the UK to start taxing individual creators who livestream on Twitch or YouTube (or perhaps to tax the platforms, or require the viewers to have a TV licence). That would indeed be egregious.
The evidence says that piracy actually increases the value of the original as pirates spend more money on the media than they would without the piracy option