Mining rigs are not profitable.
Calculate that if you bought 1 btc when btc = 4000$ then you get %70 in few months.
But if you bought a mining rig or asic? then you will still trying to get roi.
thats all simple
Anybody that says mining rigs are not profitable either hasn't mined or doesn't know how to mine the biggest rewards. If you just mine via whattomine.com says, then yeah, you're not profitable. Do a little research, swap between a few different coins and mine new releases.