A bunch of those many-to-one individual:corporation contracts (like phone service) are in such imbalanced markets that you'd have to overcome the power balance

A bunch of those many-to-one individual:corporation contracts (like phone service) are in such imbalanced markets that you'd have to overcome the power balance problem in order to get the other party to adopt the "smart" contract. But if you can overcome the power balance problem, you can just fix the contracts directly anyway without them being smart?