MASS coin mining is indeed very easy to do by anyone, you only have to have storage on your computer device. but being a solo miner on MASas coins is very difficult to do, you need large storage, for solutions small miners can join the existing pool. but so far I haven't got any profit from mining mass
This is because MASS is on few top exchanges and has price of 0.3$, its obvious that as coin goes on exchnage and gain good value its complexity increases automatically. Those who trusted in MASS in its early days are now been rewarded by MASS.