I was flicking through Apple Confidential and in the chapter on the clones there's this quote from Woz:

“The computer was never the problem. The company’s strategy was. Apple saw itself as a hardware company; in order to protect our hardware profits, we didn’t license our operating system. We had the most beautiful operating system, but to get it you had to buy our hardware at twice the price. That was a mistake. What we should have done was calculate an appropriate price to license the operating system. We were also naïve to think that the best technology would prevail. It often doesn’t.”