I think yes, but no. By this I mean, never compete directly with something that you cannot defeat. The BBC will never be Youtube, TikTok and the like. Just imaging what degree of state censorship will be required. Imagine all the content that will not be acceptable for a BBC Youtube like channel.

So any open platform will almost surely be a no-win for them. (I don't see a lot of content yet from youtube, and none from tiktok which isn't submitted by endusers... even if they're streamers)

The BBC can compete with some of the rest. But if you look at the studios you list, those all make longer, non-user submitted content. The BBC surely can compete here. And it has in the past.

There's no reason it can't stream, as you say.

Note that my prior post was all about "the way it was" and why we're here now. Why traditional broadcasters from the 70s through to the early 2000s behaved as they did. What they were thinking during those times.

But outside of that, websites aren't better at some things. If they were, then we wouldn't be watching full screen video. There's something to be said for curated, created, static content in episodic format.

Maybe you meant 'streaming' instead of 'websites' too?