Yes, that level of profit is automatically bad! A capitalist society is supposed to provide the cheapest possible alternative for the consumer, because if - and this is the case in Sweden - the current players are gouging their customers, the market can easily be won by a leaner and meaner newcomer until profits are down to as low as they can realistically go. If that's not happening and the incumbents are still turning good profits, you have a clear indication something's wrong: in the example of Sweden's power market you have an oligopoly strangling competition by raising the barriers to entry so they can squeeze more out of consumers. Nothing to do with "realistic" pricing there, just good old-fashioned collusion.