AB isn't infringing on GW IP. The people who make the files for Warhammer 40k and FB are. AB supports many different game types including ones you make up yourself. If you by the product which I do and I enjoy it you can download a free program to design army files yourself. Also, I'm not lazy I just like starting with a blank canvas and dropping units in and out at the click of a mouse to come up with new list ideas.
For those complaining about those who use AB and don't do it with pen and calculator, I bet you guys walk everywhere instead of using a car, right? Its not lazy, it technology.
I honestly don't want GW to put one out there unless it results in a lower cost for AB. I'm not fond of anything GW does other then models.
Have guns, will travel...