https://www.getoutline.com/pricing, what missed back in the days was the multi-organization management

Actually, open-source product and code can totally be deployed or reused by private actors to make money of it

From my understanding, most European governments purchase American or other foreign-owned software, which often does not contribute to tax revenues in the countries where it is used.

Tchap is based on Matrix and Element, https://github.com/element-hq

The open-source project Grist Core (https://github.com/gristlabs/grist-core) is developed in the United States, with contributions from some French gov tech team.