In one of my favorite Dilbert cartoons, Dogbert says to the boss: 'Before you bought my overpriced, under-performing software, you had all of the power. Now, it's the opposite'. The boss replies: 'How big a fool do you think I am?'. Dogbert says: 'I'll tell you after you sign the platinum support agreement'.

No need to say any more. As mentioned above, Microsoft is head and shoulders above many smaller vendors, especially those with niche products.