Ah Mu not only wanted to cut off Singapore, but he also wanted to extend the HSR to Bangkok.
https://www.thestar.com.my/news/nat...-extended-north-to-bangkok-suggests-muhyiddin
He sees investment opportunities from Thailand rather than Singapore. In another word, he thinks the Thai or the investor will come from the North.
Don't think he is thinking right. Investment flow usually is from the rich to the poor and from countries that have little land for expansion with high labor costs to countries that have bigger land to accommodate such expansion and have lower labor costs and plenty of manpower. Between Malaysia and Thailand, Malaysia will lose more investment to Thailand rather than gaining investment from Thailand. Maybe he is an ex-agent from Thailand?