If you are using a Single Gateway, it is more realistic to make foreign companies hesitate even more to come invest in Thailand and the countries have thanoe with foreign companies could lose revenue.
If you are using a Single Gateway truth will make foreign companies more reluctant to invest in Thailand. And service providers who partner with foreign companies, it may lose revenue.
If the Single Gateway true, it will make more and more foreign companies hesitate in investment in Thailand. And service providers with raveling with foreign companies may lose money.