And Gary Kurtz didn't just say Lucas never intended to have Greedo shoot, he said it would have been very easy to do that if Lucas wanted to. People who worked on that scene have even said Lucas never attempted to make Greedo fire. Painting in a laserbolt was not beyond 1970's technology.
And I think copyright and patent laws may actually protect people from corporations. You make this great new invention. It takes a lot of your work and resources and it will be very slow going for you as an individual to duplicate, market and sell it to many people. A corporation sees your design, likes it a lot and with their superior resouces, money and equipment are selling hundreds that they make a huge profit on without compensating you for it.