you forgot to take into account that a lot of people like to bet on the difficulty rise slowing down a bit. Difficulty can't rise like this forever, eventually it levels off a bit and those are the miners who will profit nicely
Sorry the slow part is over. Pre-orders are out until march netx year and it would mean that the por guys in production get obsolete. instead together with the pool Operators they will recruit more money as they did in the last two or three years.