Also (I don't know anything about Thailand, just just some quick searching), it seems at least the largest provider in Thailand has essentially the same service: https://www.ais.th/esim/en/ where you can buy the eSim either online or in a shop.
Thailand travel SIMs, like the DTAC Tourist SIM, are usually purchased in the airport after you get luggage and pass immigration. Now that this same SIM is sold online as an eSIM, you can buy it before you arrive. Skipping that extra step seems to be a plus over physical SIMs.
Just looking at Thailand, I see many prepaid esim providers: https://esimdb.com/thailand
Also (I don't know anything about Thailand, just just some quick searching), it seems at least the largest provider in Thailand has essentially the same service: https://www.ais.th/esim/en/ where you can buy the eSim either online or in a shop.