It's akin to Getty setting up a small tent inside of Central Park, and asking people that walk by to pay an entry fee.
But Getty goes 1 step further: They hire strongarm guys to go around the park and tell people (one-on-one) that they skipped out on their 5 dollar entry fee and they can 'settle' with them right now or be taken to court.
It's terrible.
I can't imagine how to solve that without a total change of copyright laws, other than scare the bejesus out of them. Which seems to be exactly what the photographer is doing.