And who says it will be nonspecialized AI, anyway? I think we’ll have really advanced expert systems well before we’ll have anything we’d consider human. Consider an example:
TMAC is Traffic Monitoring And Control. Its only purpose is to prevent traffic problems in Los Angeles and the Greater LA Area. It receives input from thousands of cameras mounted on lightpoles, weight sensors built into the roadway, and lasers placed just above ground level, all of them scattered throughout its service zone to provide it a comprehensive picure of the rather large amount of traffic it controls. TMAC controls the operation of every traffic light, railroad crossing, traffic report radio station, and traffic police hotline in its service zone, and is programmed to use them to maximise traffic flow and minimise slowdowns and stoppages. Emergency subroutines monitor for extremely unusual patterns that may indicate a crash, and can alert police when its suspicions are aroused. It is intelligent enough to create safe traffic flow patterns around construction and high-speed chases, and can even alter light timings to slow down traffic when the NOAA issues certain kinds of warnings.
TMAC is genius-level in its domain, traffic control, but it is not going to take over the world. Why? Because it is not generalized. It has no possibility of becoming generalized. Its entire universe is composed of traffic patterns, and its entire existence revolves around modifying traffic patterns to fit predetermined goals. In fact, referring to it as a genius or an idiot or a savant is deeply wrong: It is a well-written process running on a highly efficient machine, nothing more.
Or take Mark 42, the Universe-maker. It has the best physics model ever created by humanity, and it uses that software to create an absolutely perfect replication of the physical world. A human, plugged into this wonderous engine, would be unable to distinguish its construct from the real world. But Mark 42 is just as circumscribed as TMAC is: It only knows how to simulate the physical world. It has no conception of life as such, only certain actions being applied to certain objects that require certain rules (gravity, inertia, etc.) to be applied. Mark 42 can be asked to do anything, from modelling the Big Bang (thanks to the breakthrough work of Dr. Hawking, whose head is being kept alive by the mad geinuses in GQ :D) to the Big Crunch (or the Gnab Gib) to the ever-popular Universe where the Los Angeles Yankees won the 2015 World Series against the Tokyo Chrysanthemums, except do something like enslave all of mankind in an endless replay of the late 20th Century. Again, that would be outside its programming.
The point I’m trying to make is thus: Even if we do make really advanced AI, we would probably not make it human and, therefore, not make it any competition to us.