But domestic ones…?

Canadian here - sorry if I don’t know exactly how it works on your side of the pond… but isn’t your national post serving an important competitive function, keeping other (fully private) mailing and courrier services in the pricing ballpark?

If it reduces the quality of service, it won’t suddenly reduce the need to receive stuff by mail (particularly in this new Amazon world), and private companies would fill the void - at the consumer’s expense, no?