Bitcoin is weird though because no matter how many miners there are, it's still minted at the same rate globally. If it cost a miner $1 to make $2 in Bitcoin, what would not happen is new miners joining and flooding the market with more Bitcoins until the price of Bitcoin falls. Instead, new miners would keep joining and the miners would be cutting into each other's profits until it cost them all approximately $2 to make $2 in Bitcoin.