> The big sell of the postal service is that it costs the same amount to send a letter from San Francisco to Los Angeles as it does to send a letter from the bayou in Louisiana to Honolulu, Hawaii. In this, physical mail is the big equalizer.
That's also true of the internet. It doesn't cost anything to email someone who's right next to you or who is across the globe. There is very little demand for mail these days and that's pretty obvious from watching the linked USPS advertisement.