Vendor lock-in is an important concern regardless of who owns the platform you're being locked into.
If we wait for it to happen by then it will be too late
Edit: Actually, I don't think the idea of "Embrace, Extend, Extinguish" even applies to buying out companies. The idea behind that phrase applies to technologies, not companies. You can't "extend" GitHub with proprietary tech, it was never an open source technology in the first place.
If Microsoft starts extending git with new proprietary features that only work with GitHub, _then_ it may be time to start being concerned. As of now though, I don't see how "Embrace, Extend, Extinguish" applies to this situation in the slightest.
As for how EEE applies to this situation: The situation is consistent with an EEE strategy currently being in the "embrace" phase. It's also consistent with a "embrace, be nice, create win-win outcomes" strategy, but that is not usually Microsoft's modus operandi.
Git doesn't support issue tracking and pull requests.
History.
> Github doesn't have the vendor lock-in that other companies have
There's not much about Github that can't be easily replaced; it uses git at its core. Comments, issues, and wikis are convenient, but relatively simple to implement.
The main value in Github is the de facto community status it has, which it earned by being an open community and good steward of open source projects. The worst MS could do here is shoot themselves in the foot and ruin that value (which they just purchased for 7.5B) by driving developers to other platforms (who will make it all too easy to switch).
I think the M&A teams at MS must have seen this possiblity and have a different plan in mind for Github. Think dead simple (one-click) Azure deployments and integrations. And if you want (or need) that functionality for a different cloud provider, you'll just have to build it yourself on a different site.
[0] https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguis...
Integration and workflow. Thanks to the various gubbins available in the marketplace[0], CI/CD goodies, hooks into communication and project management tools and so on, for a lot of people migrating away from Github would mean losing access to enough little convenience things that actually it's not feasible for a large organisation with not great process change management techniques.
2 sides, same coin. You assume chaos, they see you assume that. They shape their narrative to fit their perspective with this data in mind. That rationalizes the behavioral pattern from their end, which continues the cycle.
Not saying I know any better solution, just that it's annoying as fuck to actually change when everyone keeps assuming you won't, and treats you as such. Chaos is probably going to happen even if there's a general mutual trust that springs forth. Can't control chaos.
They haven't fooled me since the 1990's and they won't fool me this time.
Dear reader, you should too.
This said, Free Software Devs should never have trusted GitHub in the first place.
There is a wiki, a bug tracker, a platform for pull requests and distribution, etc...