A complicated solution is not what people are really asking for though.
What I and I expect most people want is a cap which then spins down services when they reach that cap. Nobody is going to care if the cap is set to $1000 and the final bill is $1,020. The problem being solved for is not wanting to have to ever worry about missing an alert and waking up to a bill that is a factor or two beyond expectations. I can afford my bill being 10% or even 40% above my expectation. I can't afford my bill being 500% off.
I do understand that, but there are services that are still billed for when ‘spun down’. To stop getting the bills they have to be terminated.
The solution seems to be to implement ‘emergency stop’ when whole account is put to pause but no state is purged. And then you’ll probably have a week or two to react and decide if you want larger bill, salvage the data or just terminate it all.
What I and I expect most people want is a cap which then spins down services when they reach that cap. Nobody is going to care if the cap is set to $1000 and the final bill is $1,020. The problem being solved for is not wanting to have to ever worry about missing an alert and waking up to a bill that is a factor or two beyond expectations. I can afford my bill being 10% or even 40% above my expectation. I can't afford my bill being 500% off.