Steve Jobs made the case to Xerox PARC execs directly that they had great technology but that Apple knew how to make it affordable enough to change the world. This was very open. In the end, Xerox got a large block of Apple stock for sharing the technology. That's not stealing outright.
Steve WozniakI think that the anti-Microsoft sentiment is simply due to their having been so successful selling a lot of crap.
Steve Wozniak