At which point the question will be: What are even the customers paying for? If they can get the product / service straight from their own chatbots, why pay a company for it? The companies that sell data, will probably somewhat safe - as long as they can have some moat between the users and data.
The death of SaaS could also be a thing in the (not so distant) future.
I mean, the same reason they do now. Time, taste, and amortized costs.
Just because it's faster and cheaper and requires less skill, doesn't mean it's instant and free and requires no skill.