The airlines know what they are getting and the passengers are going to be the mad when they can't afford a ticket? This doesn't make sense to me. The airline

The airlines know what they are getting and the passengers are going to be the mad when they can't afford a ticket? This doesn't make sense to me. The airline should have a netter idea of what passengers can and cant afford. Is they are confident enough to order planes, I feel its safe to assume the demand is there. More importantly I'd like to know what the cost and payment down is. If its $100k you might have many taking a high risk punt. If its $20m you've got some real commitment and confidence.