If there are users somewhere, then you can get traffic, if you can get traffic, you can profit.
Whether you are spamming google SERPs, social network marketing, PPC, whatever.
Traffic == Profit
Sure old methods may not work, sure things may not be as easy as they were, but if you can get traffic, you can profit. It has always been as simple as that, from 2006 until now. Sure you cannot run a 1million wordpress comment spam run and dominate the serps, you cannot run 100 ISG accounts from your home IP following / unfollow thousands per day. Doesn't mean things are dead