"The letter frames #opensource not as ideology but as the precondition for what it calls “#pivotability” and “exit velocity”: the ability to move infrastructure when the political weather changes.
That is the right frame…two responses to an institution that disappoints you: leave it (exit), or push to change it (voice). His core point is that voice has weight only when exit is credible. Apply that to digital infrastructure: #lockin is the opposite of #sovereignty."
https://joost.blog/open-source-first-not-enough/