It makes no sense whatsoever that we can't have black market shipyards in a universe as large as Elite Dangerous! A literal 1:1 scale of the galaxy this would also make it so the powerplay service wasn't compulsory in order to get the ship you wanted. They shouldn't come with any less performance or any more performance issues, they should be a stock corvette or whatever set at a higher price. Then if people wanted to they could powerplay the faction if they wanted to get the ship at a discount or just for fun roleplay.