so people will not accept the new system might cause real problems, so it will need more repression

Capitalists are a tiny minority of the population, and only got there through exploitation of labor power. You can call this “repression” if you like, but its basic self-defense. People are righteous in resisting exploitation.

The democracy needs concessions, needs to accept in parts the other side, this why Nordic countries have a better social equality and a very capitalist oil extraction

Capitalist countries, including the nordic ones, aren’t democracies. They are capitalist dictatorships:

• What about social democracy / democratic socialism / the Nordic model? Isn’t Sweden socialist?
• On the unraveling of the Nordic welfare states: increasing inequality and forced austerity.
• Scandinavia’s covert role in western imperialism