You make it sound as if asic vendors would cancel their production if they could. Nothing could be further from the truth, we are still very far away from the point where asic vendors can not produce hardware that has an excellent ROI for them, regardless if thats achieved by selling with huge margins or by mining in their cheap electricity mega farms.

At current BTC price, for most big players, this point wont be reached before the network is on the order of 500-1000PH. Thats where the "pipeline" may become an issue. Right now, its still very much a full throttle race.