“I think going totally internet would be chaotic for business.”
Those businesses that figure out how to make a total transition from mail to the Internet will survive and those that don’t will fail.
However, the US tax payer should not have to keep the USPS running simply because some businesses are unable to make such a transition.
It’s not a business issue, it is in the fundamental design of the internet. It is just not designed to do what the postal service does.
On the other hand, fedex is an great example of a delivery business, but they are not staffed for door to door delivery like the usps is. They really do something that today there is no replacement for.