Exactly, if good money is exchanged for bad money, the system becomes corrupt. In the end, it doesn’t matter how much BTC costs for those who print money out of thin air. Once they finish buying, they'll get rid of the bad money and take over the new money. 

 The first country to print a currency and use it to buy Bitcoin wins. But even the top winners give up their ability to print more currency when they make the switch. So it won't be a 1 to 1 switch, they give up their ability to keep stealing.