For those selling AI, it'll get very competitive, and they can't charge hundreds or thousands of dollars anymore. It will be less profitable or not at all.
It is already not at all profitable. Competition will drive prices down, but probably not by as much as the efficiency increase. AI companies could go from having high prices and even higher costs to having low prices and even lower costs. Or they could go under, and be replaced by the competition.
Bird flu? Human-to-human either isn't happening, or is extremely rare, can't remember.
For now. If it mutates to become more contagious without becoming less deadly, that becomes an everyone problem