Moves are in place in other countries to impose aggresive taxes on foreign investments in some assets.
Massive capital inflow can be followed by sudden outflow in case of crisis.
Worldwide governments are studying or imposing measures to limit capital inflows from developed economies into fast-growing parts of Asia Latin America and Africa. [?Australia?]
Thailand Taiwan China Indonesia South Korea and Brazil are all taking steps to limit fund flows because such flows can sharply boost currencies which makes their exports less competitive. [Yes we recognise that.]