There is no mathematically or scientifically proven fact that bitcoin will climb after the halving, and nobody should enter the mining business with the assumption that bitcoin price will increase after the halving, if you can't survive a 50% drop in rewards without any price increase, or even worse a price drop then you shouldn't be mining.
If someone is 100% sure that price is going to the moon, they should simply buy the coin and hold it, it costs nothing to hold, easier to sell, no work is required, no risk of gears failure, house on fire and etc.