Just $2Bn? Sound a little low to for something like Github.
Most of the big tech companies already have a presence there, and they've been the go-to for VCS-using developers for a few years now.
Github recently created a Japanese subsidiary which is telling.
Glad they're growing internationally! :-)
The growth will be in non tech companies starting to do software, and non software uses of git, but noth of those will be slower perhaps. And maybe Windows shops moving to git too.