This is one reason I think it is foolish to incorporate yourself here. 49% means you have nothing, really.
It is also why I think it is not a good idea to be bringing large amounts of your cash, savings, etc and placing it in a Thai bank.
If you can't own the land in your own name legally why bother buying and investing in land here except as a gift or something to leave your wife and kids 'no strings attached'. Use the money to buy land in your home country instead. Rental property producing you some income, or just land investment for future sale by yourself or kids, wife, etc. Much safer to do, and it is in YOUR name and no one else's, backed by a will and other legal papers that will stand up in court if need be. I don't trust lawyers in general. I trust Thai lawyers FAR less than that.
With divorce being around 50% back in the west (and all the financials that can bring with it) what do you think the chances of splitting (and possibly losing it all with little legal protections here to protect your assets) with your Thai wife are? Is there a percentage of divorce among older farang men and their younger, usually, Thai wife that is higher or lower than divorce back in the west? It pays to be careful, no matter how much your lady loves you and how much you trust her. Many things that happen here are not due to the wife/GF but other side participants. People who have positions where they have ways of seeing your info and finances. But many times as well it IS the wife or GF involved in the fleecing scam.
Many Thai women, as said, have intense familial pressures, also quite a few have gambling issues, drinking problems, supposedly ex husbands still having some sort of control over the woman, and things you just have no real clue about. My suggestion to most is to stop, go slow, give it time (the scammers are usually impatient and will reveal their hand), think it over before proceeding. Be smart and try not to end up as jungle BBQ.