How does this affect companies which may not be willing or able to update off XP? Is there any mission critical software at hospitals that is XP only? Also, do

How does this affect companies which may not be willing or able to update off XP? Is there any mission critical software at hospitals that is XP only? Also, does it or can it put a prerogative on OS providers to support their systems longer than they may want to? This would have been preventable for many companies if XP was patchable.