As a result of some of my work only slightly related to telecom/internet infrastructure, I happened to get on the marketing lists for about six different Chinese companies that will gladly sell you a full size Shahed-136 clone complete with 2 stroke petrol motor. I wouldn't say that small paramilitaries being only able to fly a 5-10kg max size quadcopter with a munition on it into a datacenter is the limit of possible future capabilities. These things are cheaply made in fiberglass molds and look to be dead simple. They're already showing demo videos of them flying around with very low cost ardupilot capable flight controllers.

They even advertise the airframe and motor packages on Instagram....

Well, what an interesting time we are living in…