People still use Windows XP, and people still use old ActiveX software that was developed when IE6 ruled and Microsoft was still pursuing dominance through lock

People still use Windows XP, and people still use old ActiveX software that was developed when IE6 ruled and Microsoft was still pursuing dominance through lock-in. The real question is why Microsoft hasn't developed a way to install newer versions of IE on the older OS'. There must be a way to isolate the browser from the rest of the system, even if they have to wrap a VM around it.