Of course second order effects might dwarf that, like the fact that increasing prices would incentivize oil extraction in currently unprofitable locations. That extraction may or may not be more carbon-intensive than Norway's (though probably more if it's currently unprofitable).

It sounds punchy to say "Norway should stop extracting oil" as much as it does to say "It doesn't matter whether they do or not since someone else will", but the reality is much more complex than either of those simplistic zeroth-order approximations.