They're not 'web' apps, they're apps built to a specific platform.
Many of those are internal intranet apps, and some are not even networked - they're actual apps that use the IE rendering engine for UI.
You may not like that they're not built to your "web" standard (or whatever that standard was 10 years ago), but other people just care if their apps still work.
These apps are built to a Windows platform, and not a web standard. A platform that the current IE rendering engine is a component of. MSFT has a commitment to backward compatibility for some very strong business reasons.
And people build to MSFT's platforms and buy their operating systems, in part, because of this commitment to compatibility.
Many of those are internal intranet apps, and some are not even networked - they're actual apps that use the IE rendering engine for UI.
You may not like that they're not built to your "web" standard (or whatever that standard was 10 years ago), but other people just care if their apps still work.
These apps are built to a Windows platform, and not a web standard. A platform that the current IE rendering engine is a component of. MSFT has a commitment to backward compatibility for some very strong business reasons.
And people build to MSFT's platforms and buy their operating systems, in part, because of this commitment to compatibility.