"What would prevent a tragedy of the commons-like effect where en-masse people migrate from one place to a new one, deplete it, move to new pasture, deplete, mo

"What would prevent a tragedy of the commons-like effect where en-masse people migrate from one place to a new one, deplete it, move to new pasture, deplete, move to new pasture, asf?" Nothing. In fact, that happens with freedom of capital movement all the time.