Could you crash the market a bit, buy a lot of BTC, and then wait for it to recover again? I wonder if that would be a zero-sum game or if you could gain from s

Could you crash the market a bit, buy a lot of BTC, and then wait for it to recover again? I wonder if that would be a zero-sum game or if you could gain from such a cycle. E.g. I'm not sure if the price adjustment is instantaneous, or follows with a lag (in which case you could certainly make money). Also, it might be very hard to move large amounts anonymously onto an exchange, and if you did that (even assuming they couldn't trace the BTC to your nefarious origin, or they are clean), I'm sure you are violating some market manipulation law somewhere.