even the oil companies and banks that make billions in profit still tell you they operate at a loss.
if they are all losing money, and have been for a number of years then who is sustaining the industry?
I'm no expert
but...
Banks that report losses - due to the credit crunch for example - aren't suggesting that they're operating at a loss.
What they're saying is that they've had to write of some bad debts as there is no way of recovering the amount of money lent, as borrowers default and fail to make payments.
Lenders package up loans and sell them on the money markets - some US lenders did this and included lending from the risky sub-prime mortgage market - and other financial institutions purchased them.
The purchaser of the packaged debt benefits if it makes a profit (which it should), but they carry the burden if it goes sour (which it has in many cases).
Therefore the organisation that owns the debt have to write of the value of the bad debts, and make provisions for anticpated losses, when managing and publishing their accounts.
That is fundamentally different to operating at a loss, which means that having aggregated all of their operations the net position is a loss, ie not even broke even, nevermind made a profit.
So whilst a bank might write-off £Xbn in bad debts and provisions, it simply reduces the profit generating from the rest of their businesses.
This is not unusual. It's simply part of the cost/benefit analysis that banks do, and the reason for credit scoring and the like in the personal market - to acknowledge some debts won't be repaid, even if repossessions minimise the actual loss to some degree.
What's different at the moment is that those losses are larger than usually might be the case.