Yes thats what i said: specific requirements. Thus some one you dont want to transfer 800k baht to a thai bank account will much more easy show money in their home country account just for short period.
If you are the owner you can open a online TM30 account by filing a request incl your ownership documents. Once you have registered you can file a TM30 for yourself or any foreign guest staying in your property. But you can also file a TM30 in person at the immigration.