“There’s also the question as to whether customers really need an (incompatible) application,”
IMHO any Operating System is only useful insofar as it facilitates a users interactions with their chosen software applications which drive their business. If Windows 7 is incapable of supporting those existing applications for a business then it is Windows 7 that is incompatible and should be discarded. After all, a computer with a shiny new operating system which won't run your chosen applications is like the proverbial chocolate teapot.
I probably wouldn't have blogged on this issue except this example of Microsoft's approach to marketing their shiny new technology bought the phrase 'Big Lie' to mind, and while googling that term I came across the following description of ... well, you can guess who (the underlining is mine):
"His primary rules were: never allow the public to cool off; never admit a fault or wrong; never concede that there may be some good in your enemy; never leave room for alternatives; never accept blame; concentrate on one enemy at a time and blame him for everything that goes wrong; people will believe a big lie sooner than a little one; and if you repeat it frequently enough people will sooner or later believe it".
If Bleeding Yellow meant I had to behave like that then I'd want a blood transfusion ... I guess the standards are different in Redmond.