This is definitely on our list!
In the meantime, please create a budget which will trigger a script (e.g. Automation, Functions, or Logic Apps) via action groups to shutdown or delete resources based on your specific needs.Phil Tomlinson commented
I would like to indicate that I support this feature.
It would be very helpful for us.
It is a real concern for our business and our customers that we have effectively unlimited liabilities with cloud computing. A control which lets us limit the liability for any one project would make cloud use more appealing.