[a-priori]

As I posted last time this came up here:

This is a billing question, not a technical question, and looked at through that lens it's easy to put a hard limit on a monthly bill: just don't ever issue bills greater than that amount. If I say I only want to pay a maximum of $1000 a month, and I hit that limit but it takes a bit for the provider to shut everything down so really $1100 of resources were consumed, then the provider eats the $100 overrun and I get a bill for $1000.

With an actual hard limit you create a financial incentive for the provider to minimize this overrun. Yes it might be difficult to fix but I assure you, if hard limits existed, the technical issues would be solved soon enough because now there's a reason to invest in a solution.