@Woodie, people from India have been in Thailand since the 18th Century. Many married and had children with Thais. Under Thai law any child born in Thailand with either a Thai mother or father is automatically entitled to Thai citizenship. It is estimated that around 400,000 Thais are of Indian heritage, 2% of the population.
Also anyone can apply for Thai citizenship if they have lived legally (with appropriate visas) for over five years and are of good character with no criminal record. Around 65,000 people from India have acquired Thai citizenship by this route. You could too if you want to set up a business in Thailand.
Apologies to @Romfor thread derailment, but I felt Woodie's question needed to be answered. If Rom feels this is inappropriate he can delete it and I will reply to Woodie in a new seperate thread