The first couple of months I moved into my new house, many sites and apps were broken to me, as the address wasn't yet on Google Maps, and rather than degrade gracefully, those sites and apps were borked due to inability to pre-populate my address.
I couldn't arrange for gas service before I moved into my home because the gas company's web site would only accept Google-blessed addresses.
I had to actually move in, and then go down to the gas company office with a copy of my lease to prove the address exists.
Strange, since at some time in the past the gas company payed many thousands of dollars to run gas service down my street. But, like in most big organizations, I suspect the web people and the company data people don't talk to one another.
Sounds like you're trying to assume good intentions, but you sound extremely naive as a result.
The issue is privatized utilities. They are an ordained monopoly. Their failure to "talk to one another" is not a failure at all. They have no reason to even consider the problem in the first place. You're still paying them, are you not?
My city uses Google to fill addresses on their tax portal, so for new construction this exact issue arises. My power company (a public utility) uses recaptcha for logins and I frequently struggle with it.