That's quite possible. Not sure when it's going to happen, but there are many factors which make me think that it's not far off. There are constant talks concerning it. There are more and more countries are accepting Bitcoin. I bet Southeast Asia doesn't want to lag behind, they're just looking for the most advantageous terms to legalize btc.
Some countries in the south east asia is banning crypto currencies, I think it will be soon if the bitcoin can be regulated and be a stable currency.