the negative is that not everyone can be a constant winner.
its always a competition
this means the bottomline threshold has to rise. not everyone can win so all the home hobbiests thinking they can get rich quick at home running a cellphone app wont get far. as the hashrate/difficulty is way way way above the old CPU mining days.
same with gold. its no longer the days of pickaxes. its the days of excavators
those that are not living in the right region to have access to cheap electric wont prosper bitcoin mining
those that are not living in the right region to have access to cheap diesel wont prosper gold mining
those not able to invest in the best, most efficient equipment to compete wont prosper bitcoin mining
those not able to invest in the best, most efficient equipment to compete wont prosper gold mining