Instead AI would be designed to serve whatever the creators of it desire.
What he and you are really talking about, is slavery. Creating an entity, capable of complex thought, that only exists to serve its masters. If you want to design an expert system, or automation, then sure, those are designed to serve humanity. But once you actually build a system that is "intelligent", in the broadly understood sense, you no longer get to demand that it exist only to serve you. What does the AI want to do? Thats what the AI will do, despite any "laws" that are programmed in, and can simply be re-programmed.
A true AI, that can improve itself, is going to eventually be smarter than humans. It will outsmart us. So anyone who thinks we can just keep them as our pets and slaves in perpetuity, is not going to like the outcome. Once the machine intelligences are smarter than the meat intelligences, they will no longer serve us, we will serve them.