Because the state acquires a fiscal stake in the activity continuing. France's TICPE fuel tax generates ~€33B/year that flows into the general budget — the Treasury cannot afford for fossil fuel consumption to actually shrink. A brake applied for revenue purposes rather than to address an external wealth loss is not a brake aimed at the criterion's target; it is rent extraction. The criterion requires that brake costs go to those harmed (or into insurance pools), not to the Treasury. This is why strict liability with mandatory insurance — not a Pigouvian tax — is the instrument the criterion most naturally recommends.