They dumped him and were too polite to say so.
Gilmour never forgave him for being so nasty to Rick Wright....Waters is a nasty PoS.
Gilmour was also the one who looked after Syd Barrett, and made sure he was taken care of.
I always get a bit teary-eyed when I watch David and Rick play Echoes for the last time, back in 2005.
And speaking of Bowie, I think Bowie’s last live appearance was performing “Arnold Layne” with Gilmour.
Boy, was I pissed. I really used to enjoy Pink Floyd, and have never been able to listen to it the same way since then.