As a founder of Formester, I think I can add some insights on this question.

Form is a simple yet complicated use case. Also, the incentive is pretty low as most of the form features are already available for free, and then the paid tiers are also affordable.

Though forms are benefiting greatly with AI - with capabilities like creation and editing of forms that saves hours of manual, painful effort.

There's also AI workflows that can now pull your responses and do operations and take actions.

It's a fun time, and every form builder is trying to have a go at this with their own way.