What? Do you think most people come to Thailand with a small amount of money and monthly income? That is as wrong as it can be. Most of us have over 65k per month as retired. And that is still very small. Here it´s only the ones complaining you hear about. The other 75 - 85 % of all expats in Thailand are doing good.
Then, the average salary in Thailand is between 75k - 100k. Low income is average about 25k and the high average is above 400k per month.