While I followed it, there were two Microsoft versions blocked by Google, no joint versions to speak off, and totally subpar YouTube website experience because

While I followed it, there were two Microsoft versions blocked by Google, no joint versions to speak off, and totally subpar YouTube website experience because WP's html5 support was inadequate - but I stopped following at some point, so we might both be right. With respect to Google calendar - that indeed was a retaliation at Microsoft. Your story would be more complete if you mentioned that at the time, Microsoft was both threatening android makers with patents AND charging Google for patents related to Exchange services. While the timing probably was decided to best hit WP, I heard dropping exchange was planned a while before. Incidentally, microsoft's response was "no, no, no! You don't have to pay exchange patent fees anymore, just let WP users use Google services again". And I am happy to report that, as you know, Google ignored that plea. Microsoft has been subdued into an almost reasonable market participant position - and I suspect this fight is one of the reasons.