Because the service as it stands is of dubious (or negative) worth. So far its main uses are enabling illegal activity and MLM-style get rich quick schemes. For all of the hubbub about the crypto-revolution, we are over a decade in and 99% of its use falls into those two categories.
I was sympathetic to that view right up until the Canadian government froze the bank accounts of the truckers. Now I'm openly supportive of the activities the regimes don't like in crypto.