Unserious comment: The big company will spin up swarms of agents whose job is to overwhelm your AI agents with legal requests / correspondence, still with the goal of making you run out of money (but now via AI spend).
Second: the US justice system is also a joke. I could fight Google in justice and win in my country (France) and in pretty much any other developed country because a working system doesn't let big actor DoS smaller player out of justice. You obviously can't fix a corrupt syatem with technology.
This may be a plot point in a William Gibson novel.