They're already the number one single company in lobbying, beating out AT&T and Boeing:
https://www.opensecrets.org/lobby/top.php?indexType=s&showYe...
I imagine DoD would love smarter autonomous drones and tanks. They bought Boston Dynamics awhile back, makers of seriously creepy things:
https://en.wikipedia.org/wiki/Boston_Dynamics
They'll do just fine when the ad bubble bursts.