Mr. Brown said this would leave him with a "less than normal profit."

This assumes that firms always set price equal to average costs because they are constrained by the level of competition to making only normal profits.

It means that a firm is earning only a 'normal profit' and has no intension to leave the industry.

None made a normal profit and dozens suffered significant losses.

If the market was efficient then the model could not produce above normal profits for the user.

The market price will be driven down until all firms are earning normal profit only.

A firm will receive only normal profit in the long run at the equilibrium point.

For example, if we think of managerial firms, the managers will be expected to earn normal profits by their shareholders.

"It's Friday, and I think you're seeing some normal profit taking."

But we must be careful: normal profits won't suit him.