In the current climate regarding Brexit and tariffs + the tariff 'war' going on between the US and China - perhaps someone should look at the fairness of Thailand's import tariff policy. I know not whether the tax rise you talk of DAS is due to Thailand's 'do gooder' brigade further clamping down on alcohol or if it is another import tax rise but it matters not - Thai import tariffs are very one sided. I don't know how they get away with it - try selling a European built car in Thailand for example. Thai built pick up trucks are sold in the UK so clearly the ridiculously high Thai import taxes are not reciprocated.
I have found it very hard to find decent wine in Thailand and never seen a popular European brand - I guess the high import duty makes it difficult to market them.