This reminds me of that one gag; let's both put $20 in a box, and I'll sell the box to you for $30. (I can't find the relation to what's at hand tho)

Back on topic; in one we stop someone making a mess, in another we start cleaning it up.

Eventually it ought to start getting cleaned up. i.e. CO2 has to fall.

Developing technologies for that now is good. Stopping people from making messes is also good, and cheaper.