> what prevents companies hit with these from wiping computers and restoring data from a clean backup and fresh system installs for workstations? honestly, it'

> what prevents companies hit with these from wiping computers and restoring data from a clean backup and fresh system installs for workstations? honestly, it's probably that they simply don't have any clean backups and / or a good restore process; most organizations don't, and ransomeware recoveries for local governments over the years reinforces this.