There will be disruption as people move to various platforms and then one will “win” by a small amount which will self reenforce until we have a new GH and the pattern will likely repeat.

Companies will keep using GH for a long time because they seem to be really tolerant of outages (and have a massive switching cost depending on how much of GitHub they use outside of git).

Smaller teams/solo devs much less so.

Isn’t really anyway to coordinate it ahead of time, it’s more an emergent bottom up thing than a “all devs agree to move to X” ahead of time.