If that were the only way of eliminating robocalls you might have a point, but I think this situation is a good example of a case where relatively targeted regu

If that were the only way of eliminating robocalls you might have a point, but I think this situation is a good example of a case where relatively targeted regulation coupled with technical progress (develop+mandate SHAKEN/STIR and allow for an ecosystem of filtering solutions based on accurate caller origin info) is preferable to draconian regulation (enormous fines are totally ignored, revoking common-carrier status/other liability changes have a fractal of side-effects).