Even if someone seriously works 100 times faster with AI, it doesn't mean they can easily dominate any established market. A product is more than just code, and a company is more than their headcount. There is domain knowledge about the product and market. There is the personal ability of the workers and the synergy coming with, also the strength of established structures grown over years and decades. Just the habit and trust of users is a big fortress every new product has to conquer. That's not something some random dev or team of devs can easily reach just by being 100 times faster.
And realistically, there is also the question of where this claim is coming from. Someone being 100 times faster with AI is probably not starting from a place of high competence. Of the 100x, 90x are probably just for filling the gap to peak devs. So at the end they would be probably as productive as a highly competent dev of some domain, just that they can more easily access any domain without years of experience in that domain. And if we are honest, we somewhat have that already without AI, just by people copying and cookie cutting any sh*t
And realistically, there is also the question of where this claim is coming from. Someone being 100 times faster with AI is probably not starting from a place of high competence. Of the 100x, 90x are probably just for filling the gap to peak devs. So at the end they would be probably as productive as a highly competent dev of some domain, just that they can more easily access any domain without years of experience in that domain. And if we are honest, we somewhat have that already without AI, just by people copying and cookie cutting any sh*t