Don't sign up for a Google service unless you get contract terms which say they can't terminate you at will and have penalties if they do.
https://cloud.google.com/terms/ has explicit language around termination, disagreements around billing, breaking the law, etc. Sections 4 and 9 are probably the most relevant. Again, I'm not a lawyer, but read the indemnification and so on. Unlike other services at Google, we have real, paid, 24x7 support. I understand the general concern, but I think it's misplaced in this case.
[Edit: whoops, missed your comment downthread. I'll circulate internally with legal]
[1] http://codero.cachefly.net/docs/legal/TOS.pdf [2] https://cloud.google.com/terms/