You forgot to add the third factor that controls the price which is manipulation.


Most people are mining for profit and that would cause them to dump whatever amount they could get as long as the cost for mining < price of BTC . Miners dumping isnt a reason that the price hasnt reach $1000 to be honest and even with the miners keep on dumping , the price has been rallying for $23 now which serves as a proof that miners isnt at fault for dumping their mined BTC


You should be aware that every pump will be followed by a dump shortly afterward . Pump will only create a bubble that burn alot of people anyway which happened at the $1200 peak before