Then if you add in the value of all of the tax, the benefits paid out, then add in again all of the government services (in the UK including health as well as education, defence and so on) the actual gap in consumption possibilities falls to about 6 to 1.
As any anti-colonialist can tell you, investment that focuses heavily on extracting raw materials can be frustrating for host governments that want to boost skills and employment, and to addvalue locally even though it hauls in some tax and foreign currency.