> Maybe with the current political events and subsequent changes in priorities we'll see EU governments ponying up some money

Those wheels are already spinning at a fast pace, the French government has its own NixOS-based distro for public servants¹, teams-up with the German and Dutch governments to develop a productivity suite as to not rely on MSOffice², NLNet sponsors many "infrastructure-level" initiatives though NGI Zero³ (many in the area of networking, computer design, federated/P2P communication protocols, …)

¹: https://github.com/rlahfa-dinum/securix ²: https://www.opendesk.eu/en ; https://lasuite.numerique.gouv.fr/ ³: https://nlnet.nl/project/

Money is one thing, it's desperately needed.

The key question is, who will call the shots? That's the most pressing problem with many open-source projects without commercial backers - they completely lack focus, unless there is either some sort of BDFL providing the guardrails (be it Linus Torvalds, Guido van Rossum, Daniel Stenberg, Fabrice Bellard or the other usual suspects), or someone backed by serious financial firepower uses said influence (i.e. Lennart Poettering of systemd).

Particularly something like an office / productivity suite is ripe for conflicts. One group of users (i.e. stingy governments) want something that can run on computers that would be more fitting in a museum. Other groups want pixel-perfect compatibility with Microsoft products, even if it results in a ton of extra work. Others don't want LDAP support for the email client's address book, but instead other stuff like an integration into Okta or whatever other SaaS. And either someone will get empowered to make such decisions by everyone involved... or it will be a lot of money wasted or a lot of chaos.