It's generally down to the terms for content that networks (BBC in this case) buy licenses to. The IP owners don't want the networks to allow the whole world access to that content for the price that the network is willing to pay to show it to their region.
But also, and mostly, in reverse. The BBC is the producer and license owner of a ton of programming, and rather than offer that to the world for a subscription fee, they choose to offer it to select partners (previously mainly PBS, now Netflix and Amazon) for a licensing fee, or sometimes in a coproduction arrangement.
This is big money, up-front, with no need to build out a global delivery system or deal with millions of customers.
The BBC aren't allowed to. There are very strict terms in which the BBC can operate. So what they have to do is sell to subsidiaries like BBC America. And there in lies the licensing issues described in the GPs post.
This is one of those classic examples of something that looks really simple from an outsiders perspective but once you have to deal with the details you realise it's anything but simple. And through no fault of the BBC either, I might add. Various commercial stations and news outlets have campaigned relentlessly to shut the Beeb down. It's a miracle the service is still operating, even if their hands are tightly tied.
More generally, geographic licensing maximizes revenue without damaging brand goodwill for the vast majority of customers, so pretty much everyone is going to do it.
Hell, I thought the practice would die (or at least slow down) when Netflix started transitioning away from syndicated TV and movies; this never happened. Netflix will totally geoblock their own shows so they can, say, release a cartoon on a weekly basis in Japan but in binge-watchable chunks in America.
You will continue to see anything more premium than a high-subscriber-count YouTube channel be geoblocked until and unless one of two things happens:
- Geoblocking gets so heinous that it starts to push people away from shows and services, beyond ordinary subscriber churn. This is unlikely - the US is the biggest market for a lot of this stuff, and that's a market full of people who have no desire to watch foreign media ahead of an official release. Hell, most of us don't even have passports, and think that you can just move to another country by asking politely.
- Some country or trading bloc gets enough of a bug up their butt about getting releases late that they start amending copyright law to ban the practice. AFAIK, I've heard Australia was considering banning region locked DVD players at one point; and that the EU was considering forcing online video providers to license content on an EU-wide basis.
of all the streaming services, I have found Netflix to be the one that cares least about geoblocking. they appear to care on the outside to appease the production outlets, but on the inside they don't appear to block or discourage VPNs at all. unlike the BBC who actively, and aggressively, geoblock their content
> The BBC is the producer and license owner of a ton of programming
The BBC is complete license owner of virtually zero programming. Almost all (as in 99.9%+) of their content uses substantial third party copyright works where the cost implications of selling internationally still apply (just the music rights alone will drive you mad, and it's far from uncommon for BBC content that is shown in the UK to have a different soundtrack to the internationally sold version to the likes of Netflix due to the licensing cost and complexity).
It is also worth noting that the BBC makes a lot less than people think, especially if you consider BBC studios to be a quasi-separate production entity now (which it is!).