The less influence Xbox has in the console space, the more Sony will charge for theirs. The price of the PS6 will be predominantly determined by just what level of competition it has in the market. If by 2028 (or whenever it releases) Xbox is largely irrelevant, then expect Sony to price it anywhere from $750 to God knows where. If Xbox is still roughly as relevant as it is currently, then I'd expect it to be priced roughly $50-100 more than whatever the next Xbox retails for.
