but everything above a minute could become critical for large orgs
relying on the ability to spawn vms at any given time.

or imagine critical HA vms running on ovirt:
you can't migrate them, when the engine is not running.
you might not even want a downtime of a single second for them, that's
why you implemented things like live migration in the first place.

the bottom line is:
if you manage critical infrastructure, the tools to manage
this infrastructure have to be as reliable as the infrastructure itself.