Its not profitable to clean: even if cleaning was paid for by the government, most cleaning efforts would be commercial enterprises simulating maximum cleaning

Its not profitable to clean: even if cleaning was paid for by the government, most cleaning efforts would be commercial enterprises simulating maximum cleaning effort(like the incentive to collect rat tails will result in rat breeding farms, the "environment cleaning industry" will be most profitable with more pollution and costlier cleaning incentives/bonuses ). It will result in encouraging more pollution and removing all safeguards(clean coal? we'll clean it up later!) towards a new industry whose main interest would be preserving pollution forever to profit from cleaning it up. Like a pharmaceutical industry, the symptoms are more profitable than curing the disease completely.