i'd agree with that. the problem is that it also makes it easy for people to be lazy. so if someone has lazy-man tendencies, they will likely come out in their laptop PA.
some people mistake this as the technology requiring people to be lazy. but i don't think there's any reason a laptop PA has to be lazy at all. in fact, it could potentially be much more exciting than a hardware PA because you can do so much more with ableton. was looking at that new akai controller and you can basically do everything you could with an MPC, in exactly the same way, if you like. sort of explodes the idea that the gear makes the PA.