The piece of capital equipment as far as a hospital or doctor's office is concerned is the medical application software or the MRI machine, not so much the OS,

The piece of capital equipment as far as a hospital or doctor's office is concerned is the medical application software or the MRI machine, not so much the OS, IMO. If Cessna says the only powerplant that your Cessna 172H is certified to use is the Continental O-300, then that's what you run. Continental doesn't make the O-300 or parts for it anymore? Too bad, you fly with an O-300, or you don't fly. Guess it's time to turn to the secondary market for parts and support for that engine. Get a newer airplane with a newer, better engine that's still being supported by the manufacturer? Hmm, the presently-owned 172H is paid off, still flies and still makes money. Buying a brand new 172S requires taking out a new mortgage and isn't going to make any more money than the 172H does. Seems like we're going to keep the 172H for the time being. I don't disagree with you that capital assets should be maintained. However, the companies running these older applications that require older OSes aren't the only ones at fault here. The manufacturers of the medical devices and software themselves are just as much to blame. This situation didn't come about solely because CEOs were being slackers about maintaining capital assets.