Note that you can also describe humans under that paradigm - we come pre-programmed, and then the program changes itself based on the instructions in the code (some of which allow us to be influenced by outside inputs). The main difference between us and his computer here is that we have less constraints, and we take more inputs from the outside world.

I can imagine other arguments for why a computer might not be considered concious at all (mainly if I play with the definition), but I don't see much difference between us and his computer in regards to this criteria.

P.S. Also the computer is less like the rolling rock, and more like the hill, rock and sticks - i.e. the whole system.