Qualcomm is dreaming
If they think 5G is going to drive a wave of smartphone upgrades. There isn't any meaningful advantage to it, a higher theoretical max speed is meaningless when you're already at 1 - 2 Gbps for LTE, which is far more than any single phone can make use of.
Their big problem is that with CDMA going away and Samsung and HiSilicon offering SoCs of similar capability, there is less of a reason for Android OEMs to choose Qualcomm SoCs so they'll be forced to compete on price.