You'd think Canonical would contribute more...
I think there's also a larger conversation of what folks really need from a Linux distribution in the year 2020+. Desktop Linux is fairly needy but AppImage and flatpak have largely fixed that.
They've been there for 20 years already.
Context: I have +10y exp with Python, Linux (some packaging, kernel hacking, sys admin / SRE), C, several cloud providers (AWS, Azure, Hetzner, DO, OVH), etc...
Applied to a Canonical position (Senior Python Eng + required Linux exp + nice to have cloud knowledge), got rejected automatically because I don't have a university degree.
Tweeted about it, asking for some feedback. Tons of replies, same opinion: Canonical are plain elitists.
Don't expect them to contribute.
How much is enough? Did you know that significant contributions to Debian are made by Canonical employees who are Debian Developers being paid to do so?
As a recent example, Debian's recent 64 bit time_t transition was driven by Canonical employees. Canonical employees continue to maintain various packages in Debian, but it's not obvious because they use their Debian "hats".