I disagree the BBC is still able to put out some great Drama, this year you've had, The Serpent, Line of Duty, Baptiste, Vigil, The North Water to name a few.
Probably don't spend as much as Netflix, HBO etc, but at the end of the day they can still put out engaging and gripping content.
Less episodes, but each one will be meaningful with no filler.
'The Serpent' was produced by a company called Mammoth Screen, and made with cheques written out by The BBC and Netflix.
'Baptiste' was made with money from Disney, with The BBC kicking in some of the budget.
'Vigil' was BBC money, and they spent a lot less on that, than was spent on the above two series.
'The North Water' likewise was made by an indie, with money from the US network AMC and The BBC kicking in some of it.
'Line of Duty' was made with money from the BBC as well as others, but I think it's the only production you list that can be said to be a 'BBC job'.
There's no such thing as a solely BBC production these days. Money swishes around the world, and The BBC stays in the game because of streamers like Netflix, Disney+, Hulu and others.
But don't think The BBC is putting up some valiant fight against the Yankee dollar and trying to be meaningful on a budget of 18 quid. Might have been the case up to the 1990s, but not any more.