Re: "straight out of its 1990s bullyboy playbook"
The "extend, embrace and extinguish" is back, though.
If you think Microsoft's Open Source efforts are out of the goodness of their treasured little management hearts you have failed to examine Microsoft's history - good examples are what happened to Kerberos or the "open" document mongrel MSOOXML and what they did to make that an ISO standard. I think ISO is still suffering from the damage that did.
That's why there is no hope in hell we will ever return to Microsoft products. We prefer to use IT that works for us, not for the provider.