The point that I was trying make is that BBC TV wants to be everything.
1. A public service broadcaster
2. A gargantuan institution
Don't agree - I don't think the BBC has any particular ambitions about being a gargantuan institution, if it did why did it sell off :
Its Playout arm
Its Transmission arm
Its Technology arm
Its OB trucks
and why did it spin off it's studios and production departments into separate companies (ripe for sale), and close large chunks of its online presence.
It also now makes fewer and fewer programmes itself. The BBC, as an institution, is getting smaller not bigger. (It's headcount dropped by 4% between 2010-11 and 2015-16)
It has a healthy income, but when you compare the funding of PSBs elsewhere in Europe, it is by no means the best funded. Germany is a place to look for 'gargantuan' institutions...
3. A finger in the pie of almost every genre of TV programme imaginable
The BBC's mission is still to educate, inform and entertain. It has a duty to deliver programmes that the people who pay for it want to watch, as well as deliver shows that wouldn't be delivered by others. Why shouldn't it delver shows in most genres (it doesn't do big cash prize game shows)?
This is the eternal balancing act for European PSBs - you have to be popular but also public service to justify your existence. If you look across Europe - the successful ones are still getting healthy viewing figures, delivering high quality public service content - but importantly delivering it to a healthy sized audience, and not becoming a worthy ghetto.
4. A flag carrier for Britain on the global stage
The 'Nation Shall Speak Peace Unto Nation' bit of the BBC is important - and has been a big part of the BBC's international role for many years. (Talk to people who lived through WWII on continental Europe to realise how important) Flag carrier doesn't feel like the right word to me. It's about providing unbiased, factually accurate information, again with some entertainment and education, particularly to those areas that don't have it available domestically.
Whether the BBC 'wants' to do some of this is slightly muddled with the requirement to do it legally.
PBS only ticks box 1.
PBS is a very basic PSB, unrecognisable from most mainstream European PSBs. Thankfully Europe still values public service broadcasting - unlike the US.