It reminds me a bit of The Big Breakfast in its last few years. The bosses at Channel 4 made no secret that they didn't want it but Planet 24 had negotiated a one year notice period. Plus the brand was still huge and ratings were still higher than anything which had previously taken that slot.
At the end, though, the viewing figures were almost the same as those of the Channel Four Daily a decade previously. That's according to Ian Jones in his Morning Glory book, anyway.
It depends what is defined as "almost". It was getting between 300,000 and 400,000 during its dying days compared to the 100,000 that tuned into Channel 4 Daily (and later RI:SE at some points).
Mr Jones says that the 'Daily's figures were usually around 200,000.
He also says that by spring 2001, the Big Breakfast's figures were "close to 200,000 - the figure that had brought the axe down on the Channel Four Daily, which compared to the current incarnation of the Big Breakfast seemed positively radiant". And this Guardian article from around that time, regarding the appointment of Ben Rigden as the show's (final) executive producer, says that the figures were "in the doldrums at around 300,000" - which I don't think can be considered a long way away from 200,000.
https://www.theguardian.com/media/2001/mar/30/broadcasting5
I've said before that the last-ever episode comes across as a bit of a "screw you" to C4 - especially the bit with the giant garden gnome outside 124 Horseferry Road. I guess Planet 24 weren't happy, having also failed to win the contract to produce the replacement show (we can only speculate whether or not they would have done any better than Princess Productions and Sky).
There was far, *far* more dignity in the last episode of Big Brother on C4. Obviously, we'll just have to wait and see how dignified an occasion the last C5 episode is.