That’s not the question, though - it’s would they switch. Switching has significant friction, at least in people’s minds. You probably wouldn’t switch from ISP1 at $30/mo to ISP2 at $29.95/mo (with the same service) unless you’re irritated with ISP1 for other reasons. You might have chosen ISP2 if you were starting from scratch, though.
So you agree the question is meaningless. If “better” means “better enough to overcome the switching cost”, then the answer to “would you switch ISP if you had a better option?” would by definition always be yes.