<https://en.wikipedia.org/wiki/The_purpose_of_a_system_is_wha...>
And even in the US, you could presumably easily find all your Google accounts (including personal ones) locked until you pay the outstanding sum. Not something I'd risk, personally.
In early mobile networks, the feature set for prepaid used to always lag behind, since real-time billing wasn't really a design consideration from the beginning.
I suppose rather than taking on that extra work or offering a reduced feature set or by building something best-effort and taking financial responsibility for its failures, if cloud providers can just get away with making this the user's problem, why wouldn't they?