There are also differences because there are national regulations that differ, which in effect increase the price of carbon in a particular national jurisdiction because there are carbon levies and so on in addition to the price established by the market. So you are right that investment will tend to be driven by where people see the most advantage and possibilities for profit.
Evidence of meeting #38 for Environment and Sustainable Development in the 40th Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was targets.
A recording is available from Parliament.