Embedded consumer electronics/IoT generally have awful security configs and an internet connection. Consumer-grade, and I bet a fair bit of the more high powered drones, are vulnerable to this same risk.
I'd love an educated opinion on this, but to the extent I've thought about this as well - many of these drones must be vuln to some form of remote code exploitation and shutdowns, if you can get a targeted signal to hit their admin "beacon" or w/e.
As consumer drones do show up in warfare a fair bit, this feels like a possible counter-drone route to explore.