It feels like they’ve always taken the approach: “Why rewrite anything when we can just add more virtualization?” In the short term, that might help ensure comp

It feels like they’ve always taken the approach: “Why rewrite anything when we can just add more virtualization?” In the short term, that might help ensure compatibility with older versions with minimal testing. But after 40-something years, it’s clear that it’s become a mountain of technical debt—one that Microsoft has no real plans to tackle any time soon.