Let’s define “stealing” and “business” here.

1. Influencers don’t produce anything, nor do they add intrinsic value to products they promote. Not much business to that if you ask me.

2. They do already compete fiercely for brands’ atention so every successful influencer by definition has “stolen” potential income from others.

If you want to split hairs, influencers’ work is creating an idealised image that they project to peddle products. If AI can outmatch them in that regard, I see no problem with that.