Do you have anything to back this up other than it being your knee-jerk reaction?<p>Microsoft&#x27;s entire leadership has turned over and it&#x27;s easy to see that their culture is very different from the days you&#x27;re talking about.<p>Also, they don&#x27;t have a monopoly on nearly anything and certainly not on Javascript engines. They couldn&#x27;t move to the &quot;Extend, Extinguish&quot; phases even if they wanted to.