THey have a payment method as well which is definitely identity verification. Don't expect this to filter everyone hiding behind fronts and shell orgs, but it's a step towards that.
Google already had a "Verify your local business" option, I wonder if this data was integrated into AdWords accounts as well. https://support.google.com/business/answer/7107242?hl=en It seems like this data should already be on file and verified if you are business advertising with AdWords.