I believe its a done deal as well , based on Chinese foreign...

I believe its a done deal as well , based on Chinese foreign investment being in the trillions not 100'S of billions over the next decade. They have expressed their commitment to invest in Africa.

The costs of building the rail and port isnt that large if you can share the build cost with other users or charge third party access. From what i have read , the chinese overcharge to build the rail and port plus use their own materials and labour so they make a decent profit on it as well.

As for a new tax here's one

http://www.nodrinkcontainertax.org.au/