Yeah? Why so?
"The Vietnam war, saw dozens of American soldiers drop by in Bangkok for rest and recreation. Selling sex and alcohol was a quick way to make a lot of money during the war. Cashing upon this, Patpong opened its premises to establishments such as bars, massage parlors, nightclubs, and entertainment complexes. Thus, came into existence, the Patpong market."
What else is also true is that because the sois were becoming a throughfare the government was looking at a way of recovering the sois (not the land) as it was public space. The patpongpanich family partially started the market to keep the sois blocked and not a public thoroughfare thus keeping the sois in private hands.