Cash game is not created for you only as long as you do not start reading books and training materials on it. I don't see any obstacles. For me, the cash game is much more convenient than tournament poker.
I do not really see much connection to the "reading books and training materials", as it is available to anyone, so that would mean, everybody is profitable....
CG is definitely not for me. In Holdem, I could make plenty small profit days, but the loser ones took 4-5 times more than a winning, maybe I was on 0 with all the rewards.... however it was really annoying, looked like total waste of time.
In PLO, what I would play only for rake, I also can't handle similar things, when the 'pre-flop alliners' sitting at the table, and basically no other option left, fold or allin preflop, and does not matter I raise or call with AAxx with 2 flush and straight draw or I call the 3 way allins with 6789 or 78910 both burns for days, meantime the same set up the winner for others.... do not mention the played
hands till river, where they wait for the 1-3 outs, and it keeps falling for days.... (I saw some crazy runs in HL, but none of them was near to the craziest PLO river falls...only the 1-3 outs, nothing else) I can read and 'study' any materials for life, I can count variance, and probability, it should be a huge +, and it still creates the biggest loss... (these days should be the most profitable, meantime I lose the most. If someone can explain it for me, based on any 'material' or mathematical counts, then I congrat to him and quit playing poker forever.) and it is not about couple of days, it is about months... no trust at all in online CG, only tourneys, even there are plenty unbelievable things, too....
So I stuck in tourneys, at least, I can make some profit there on my level.... Generally, I think, obviously an MTT profitable player easily should be a winner in CG, too. I do not see big differences, you can find plenty players like that.