Wow! Not even sure if that can be extrapolated into other markets such as China or India (although the take impact is not as big due to their lack of internet access). The impact is very big indeed.
May have to start calling "post office" the "cargo office" as cargo would be the only item physically sent.
Actually I live in mainland China. They really jumped on the internet. Letters basically no longer exist here, it's even rare for bills to be sent by mail, it's all electronic: they skipped that stage. Just as you say: cargo office, except that unlike the US with Fedex and DHL, here they have about 20 private national courier companies, and their prices are really low.
May have to start calling "post office" the "cargo office" as cargo would be the only item physically sent.