anything could happen as we should know with how crazy bitcoin has been since it was created lol. The volatility I feel would be less the more money that comes in but also the fact the reward halving after this time around is not going to have as much of an impact on the supply coming out. 12.5 to 6.25 is a pretty big reduction but 6.25 to 3.125 per block I feel will have smaller impacts.