What if the coin goes DOWN?
Can you profit buying the coin (shorting BTC is very difficult from what I understand) if the exchange rate drops? A miner can.
Purchase miner for 0.75BTC. Mine 0.375BTC. BTC goes down to say $100. You have 0.375BTC worth $37.50.
Don't purchase miner, keep the .75BTC. BTC goes down to say $100. You have 0.75BTC worth $75.00.
No matter what happens with the exchange rate of BTC or whether it goes up or down, 0.75BTC is always more than 0.375.
At this point I simply refuse to believe that anyone can be this obtuse or ignorant. You must be trolling.