This is incorrect. The mining reward halves every 4 years, but if the price of bitcoin goes up then so does the value of the reward. Also it is a bit of an arms

This is incorrect. The mining reward halves every 4 years, but if the price of bitcoin goes up then so does the value of the reward. Also it is a bit of an arms race so more power is required to power more machines,to mine the same number of bitcoin.