In that case, unless it's managed to leave fiat behind to a large extent, they could strangle exchange options by simply blocking transfers in and out of them.
and what ?
exchange is only the following solution after localbitcoin because of the facility of the wire system.
if wire is blocked (they can't do this now ... because of the recent VAT indicator and because all major and big exchange are complained with tresorery policy of each country where they have his social location) ... sell and buy go the public decentralized exchange or ... localbitcoin system P2P mixed solution.
after all ... i can wire an amount of money to an other privat party that it sell BTC (with notority).
in europa, we have already an alternative to localbitcoin to connect privat buyer to privat seller with escrow and automated payment detection via postal banking service (like in africa !).
well ... the cost is not the same.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
but, in my environment, i use the 3 solutions now :
- postal banking exchange (can buy at high speed)
- big exchange (can sell at high speed)
- national exchange (low volume, can catch bounce black hole)