The prices of these "trapped" bitcoin will not diverge as long as there are other countries that don't have these same rules. Prices will equalize globally
I'm not sure that this is true. You would think prices would equalize, if information flowed freely around the world. However, if you're trading fiat for BTC the price on the P2P market varies greatly from country to country (even after accounting for the fiat exchange rate). For example, check P2P prices in India vs. the U.S. – they are always much higher.