It makes no sense to privatize the Post Office unless you want rural folk to have to drive miles to get their prescription drugs and other mail and packages. There is a reason FedEx and UPS pay the Post Office to deliver over half of their parcels. How many people, companies do you want having access to your mail?
The Post Office is Constitutionally mandated for a reason. It ties this country together in more ways than most understand. The internet can be taken out.
You posit a red herring of rural delivery. Why can’t a private company do this?
The post office function is constitutionally mandated, not the USPS as presently manifested. The same function and purpose can be accomplished at far less cost to the taxpayer through a private entity.
Legions of expensive government employees are not constitutionally mandated.
The reason UPS and Fedex use the USPS for some package delivery is that the USPS labor costs are subsidized by the taxpayer to the tune of 3 billion a year. It makes it cheaper for them to do so.