>Norway's success is due to capitalism

Erm, the wealth comes from finding a valuable resource. The oil isn't there due to following a particular ideology.

A capitalist system would give that resource to private wealthy individuals as reward for being wealthy (eg owning the land where the well-heads are). The sovereign wealth fund is more like common ownership, socialist-communist.

The socialist-capitalist dichotomy is based on ownership and the profit (financial or otherwise) of that ownership. Capitalism means narrow private ownership, the profit going to those owners; socialism democratises the ownership and benefit -- they are contradictory.