I think you fail to understand just how involved, expensive, and business critical some of this dodgy software actually is. Some of this crap software costs mi

I think you fail to understand just how involved, expensive, and business critical some of this dodgy software actually is. Some of this crap software costs millions of dollars and takes years to upgrade. Ignoring even the security implications, you can't simply not upgrade either as software doesn't exist in a vacuum. All the other software/hardware involved might need newer versions or bug fixes. Microsoft doesn't even support newer Intel chipsets in versions of Windows older than 10 -- that's only even possible because 10 is highly compatible with older versions of their OS.