I don't know whether those who are responsible for drafting Thailands Foreign Business Law are aware of the Hitchhikers Guide to the Galaxy but if this article in this mornings edition of The Nation is anything to go by they might want to take a look.
The bit that caught my eye read as follows :
The Foreign Business Law covers three lists of business sectors - deemed critical to national security - subject to the degree of protection. The most protective category is Annex 1, followed by Annex 2 and Annex 3.
Industries listed in Annex 1 include rice farming, forestry, agriculture and protected professions such as hairdressing.
Well obviously hairdressers would be critical to national security!