I do not think the bitcon price will fall below $400 any more. The mass adoption will support the price.
I agree with that. When the block size is increased in the next 12 months, more transactions can be supported.
More transactions coming through doesn't mean the price will not fall below $400 again. I think it's safe to assume that no matter how low a certain price level may seem, the price can always fall below that price level. We've seen that when the price reached its highest point in 2013. Literally no one thought to ever experience sub $200 prices again. But it still happened.