I think that this will not happen again until the spring of 2019 because now the bear market
You are assuming "bear market" Hello?
Just to let you know (just in case you don't realize it), we are currently in a BTC price correction or alternatively a "consolidation," which is not the same as "bear market."
In other words, your assertion of "bear market" remains premature.
I am not saying that "bear market" might not happen down the road, but we are not quite there yet, even though some folks like to prematurely and presumptively describe where we are at, currently, based on future assumptions of downward BTC price movement (or a very long period of sideways), neither of which has happened yet.