you missed the news of the last couple of years with all these names dropping btc because if the high fees, a problem that could be solved but wasn't due to politics

Also transaction times + volatility. Because it takes so long to confirm, the underlying exchange rates were shifting out from under customers, so even though you'd paid the right amount, by the time the transaction cleared, they either needed to refund you or you needed to pay extra. The whole system was so asinine nobody wanted to use it, and it created tons of customer service headaches.