I vaguely remember the days when people mined at home using their CPUs and people would write their own GPU miner and hoard them to get am edge. These days a lo

I vaguely remember the days when people mined at home using their CPUs and people would write their own GPU miner and hoard them to get am edge. These days a long gone. ASIC miners have been great but they cannot scale indefinitely. Currently even the larger pools have electricity costs somewhere between 30% to 50% percent of their average payout. Previous halfing are handled more gracefully because they occured when the value of BTC was going up, and it won't be the case in July. And it's not like we can somehow manage to make miners with 100% more performance per watt either.