upload is aggressively throttled, filtered, sniffed, redirected, and otherwise treated as a hostile act by ISPs, to submit to the demands of the media industry and keep squeezing businesses for exorbitant rates for the same bloody service but with the filters turned off.
your average consumer ISP account where i live can't even run sshd without using complicated work arounds.
the system has de-democratized web hosting and monolithic services have rushed to fill the vacuum left by the death of the ISP hosting era.