I agree with your sentiment about MS technologies.
However, Microsoft is not the only one playing with the developers. Just take a look at Google and their API deprecations of API and game rule changes for Appengine.
"Vendor" lock-in is everywhere, for the most part. Yeah, if I didn't like something Linux, Apache, GNOME, etc were doing, I could fork the source and go my own way, but is that realistic for even 99% of the people out there?
No. I'll still have to venture off and find an alternative or just deal with it.
Or go nowhere, if you think the software does whatever you need. When you have lock-in, it's always the vendor's decision and if you don't like where it's going, you have no choice. When you have open-source, the decision whether you continue with the product or find an alternative is yours - you are free to do whatever you want.
However, Microsoft is not the only one playing with the developers. Just take a look at Google and their API deprecations of API and game rule changes for Appengine.