I do not know why most the popular company not accept payment in stablecoin, if they do not like to accept bitcoin due wide range price, stablecoin not.
The problems of stable coins don't let popular companies accept stable coins as a payment method. Stablecoins lost the popularity after the Tether scandal and the big crypto exchanges especailly Bitfinex was sued by the investors AFAIK. I don't guess the formal payment methods will be ignored and the preference will be given to the stable cryptocurrencies.