MS cannot deliver successful stuff on the web at scale.
They can deliver unsuccessful stuff on the web at scale, they can deliver successful stuff that turns out to be inconsequential for their bottom line on the web in the long-term (AJAX came from MS), but it's just not in their DNA to take over the web. They had lots of chances to do it during the last 20 years or so, they had all the silver bullets at their disposal, they just couldn't deliver what it took.
They can deliver unsuccessful stuff on the web at scale, they can deliver successful stuff that turns out to be inconsequential for their bottom line on the web in the long-term (AJAX came from MS), but it's just not in their DNA to take over the web. They had lots of chances to do it during the last 20 years or so, they had all the silver bullets at their disposal, they just couldn't deliver what it took.