The O-A is for clueless people and for people who doesn't have 800k to transfer to a Thai bank. On a 90 days Non-O visa you have time to open an account and transfer the money. 30 days is enough time.
So tell me where you've heard about limits on incoming transfers from abroad and name those banks. I have several accounts and my transfers via Wise have no ridiculous limits.
If you know how to use the app you can see which Thai banks are supported and which are not and why. It has nothing to do with the OP and his nonsense about a 50k limit.
Only a few Thai banks are at the moment supported by Wise. You can get the list in the app. Several other Thai banks are updating their payment systems.