Why would anyone consider opening a business if they know it's going to be unprofitable. It defies logic.
What if that 'anyone' doesn't accept logic at all?

Either way, it's not worthwhile discussing. If he or she doesn't want to face facts and still opens up a business, what are the chances he's going to close it by next month?
Why is everyone try to use as much rhetorical question as possible in that discussion:D