[owenmarshall]

In the example of overfishing, there is no group lobbying against "any and all" regulation.

But the owner of the fishery/cannery is lobbying against quotas, the owner of the fishing boat is lobbying against worker protections that would slow down the harvest, and the restauranteurs sure have a significant interest in keeping the price of fish as low as possible.

Heterogeneous groups, acting in their own interests, end up working towards the same goal - preventing regulation that would slow overfishing. That's the tragedy of the commons.