Comment User Interface patents (Score 4, Insightful) 434
The difference is, that hardware patents can usually be worked around, as long as you can keep the user interface stable. Changing the user interface on the other hand means that the enduser must adapt, which he usually is reluctant to do. It is a form of monopoly.
Imagine, for comparison, that Alfred Vacheron had patented the steering wheel in 1894 and had been unwilling to license it to competitors. The outcome could have been that dozens of different ways to steer a car would have been invented and users would have troubles switching between manufactures. A serious hindrance to a competitive market.