Is Microsoft's stack easier and cheaper to replace than Apple's? Or Google's? I reckon you could easily move a company off both of those....
Considering the number of companies who apparently can't/won't move off XP (or even IE6) or Windows 7, it looks as though the Microsoft stack is quite deeply embedded in businesses. As was IBM's, and IBM is still a $100 billion (annual turnover) business about 15 years after it became irrelevant.
Considering the number of companies who apparently can't/won't move off XP (or even IE6) or Windows 7, it looks as though the Microsoft stack is quite deeply embedded in businesses. As was IBM's, and IBM is still a $100 billion (annual turnover) business about 15 years after it became irrelevant.