That is why PSA is buying into ports all over the world

All the earnings from Singapore's transshipments are from port charges to PSA (for imports and exports, it's quite different). So if we can own ports overseas, we are hedging our bets. If the Malaysian government allowed it, we would even buy a good piece of PTP and Klang and make their success OUR success

As it is, we own quite a lot of ports around the world, so we actual earn on transshipment at many places around the world.
If you can't beat them, BUY them.