Bangkok Post – As a former supervisor of an underground casino, M promised he would make me some profit. My stake was 3,000 baht. Some 50 people were playing at a townhouse-turned-casino in a district on the outskirts of Bangkok. The place is one of an estimated 1,500 illegal casinos nationwide, dozens of which operate on a franchise basis under the tycoons known as “Gold Dragon Teu” and “S Sommai”. With only one table divided into two, it was so crowded that players had to ask those in the front line to place bets for them. On very crowded days,…