I don`t see any problem. Someone lost his money. Ok, it`s his problem. He turned his rigs off? Ok, difficulty goes down. Mining not profitable? Ok, turn off rigs. It`s just their problem, not yours. If they are listening for unknown man how to spent their money - it`s just their problem.
They don`t disturb me, their problems don`t worry me. I know that mining = profit. And i`m ready to buy their GPU for 50% from MSRP