My experience is that the market maker will maximise their profit and minimise their loss. That means they will evaporate the profit then turn it into a loss, then into a bigger loss, until the money is theirs. So my counter measure is to take the profit.
But as there are longs and shorts in the market and if you establish we aren't all living in our own personal Matrix's, surely the MM what ever it does will cost someone and make someone else money.
The difference is, you'd take profit at 20 and let the loss run until margin called, that's where they win.