@pourteaux the cheapest and easiest hashrate will be arrived at by a great number of variables: personal preferences, geographical location, professional networks, team knowledge etc etc etc there are a great deal of variables in how efficient one may mine. with POS there is only 1 variable
@pourteaux more variables in POW which utilises human creativity in setting up mining operations and getting ahead, people will be forever competing not only for the block reward, but also the cheapest & easiest way to increase hashrate.
This is not the same with POS.