Well no it's not really infinitesimal when one takes the trouble to work out how many expats there are with a requirement to keep money in a bank.
Let's say there are 200,000 expats in the country with a mixture of 400k and 800k in the bank for immigration requirements. I'm going to call that an average of 600k for the sake of convenience.
So we are looking at 600k x 200,000 = 120,000,000,000 Baht. I would be a very happy bank manager if some of that was in my bank for an extra month or so.
By the way I am never the sort of person to hold myself in high esteem for any reason.