Nobody knows. But the only things guaranteed are:
- service prices will rise because now shareholders will seek a return every year.
- AI powered elevator music phone service where you must wait 30 mins before reaching a human.
- Fees and costs for every interaction.
- Workers will be encouraged to do work fast - by providing less service to people, asking people to come over and over again
- More lobbying to reduce license and registration durations because they need people to constantly renew to collect fees and profits.
About FedEx, I don't know why you think US post offices are bad. I personally find USPS to be astonishingly high quality and decent humans. FedEx is decent quality but 10x higher prices than USPS.