The EU's NGI Zero in cooperation with NLNet has been funding quite a bit of postmarketOS
https://nlnet.nl/project/postmarketOS/
https://nlnet.nl/project/MobileSettings
https://nlnet.nl/project/pmOS-23-24
https://nlnet.nl/project/postmarketOS-daemons
https://nlnet.nl/project/pmOS-25-26
I think if NGI Zero had been around when Meego was killed, we might be in a better situation now.
I also get the feeling, that the fact that there is so little reported and discussed about this funding reflects the actual level of interest in alternatives.