They're still capable of creating another FM album, regardless their age. Unless one of them suffers a sudden death, I don't see any of them dying soon, not even John. His musical skills seem intact, IMO.
BUT, there won't be another album, thanks to guess who?
Mick wants to make a new album
John wants to make a new album
Lindsey wants to make a new album
Christine wants to make a new album
Stevie said a new album won't sell, which means 'no, I don't want to make a new album'.
So, who were we supposed to blame? John Courage?
No, I believe we should blame the only person who searched for excuses.