I think it's static inasmuch as it isn't an inherently adversarial problem. The world isn't bent on thwarting self-driving cars. Bot authors are bent on subverting detection.
What I mean to convey by "well defined" is that even though the problem space of self driving cars is enormous, the success criteria of teaching a car to self drive is probably going to look pretty similar in 10 years to what it looks like now.
Bots on the other hand changes constantly - what is the definition of an abusive bot? What is the definition of spam? The adversaries on Twitter adapt not only their tactics but also their goals.
Oh, that'll come.