Anyone can generate revenues by selling things at prices that are so low that you cannot make a profit.

FORBES: Groupon Remains a Put On

No matter how high the price goes, the oil majors cannot make a profit from oil they do not produce.

ECONOMIST: Rising oil price equals rising profits, right? Wrong

After all, if it cannot be run efficiently, it is not possible to make a profit at it.

FORBES: Colleges And Universities Should Operate More Like Businesses

Unlike the large builders, he cannot afford to offer deep discounts or he won't make any profit.

BBC: Housing meltdown hits US economy

Patents of genetic material make it particularly difficult for not-for-profit organizations, which cannot pay the royalties they would need to access the material.

BBC: Demand for gene patent rethink

The House of Lords code of conduct says peers cannot engage in "paid advocacy" - using their access to Parliament to make a profit.

BBC: No 10 plans statutory register of lobbyists bill by July