"especially as we won’t work on product marketing for AI stuff, from a moral standpoint, but the vast majority of enquiries have been for exactly that."

You will continue to lose business, if you ignore all the 'AI stuff'. AI is here to stay, and putting your head in the sand will only leave you further behind.

I've known people over the years that took stands on various things like JavaScript frameworks becoming popular (and they refused to use them) and the end result was less work and eventually being pushed out of the industry.