<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by fakecd:
7% of Y-cabin space is lost. If the flight is fully sold out, that's almost a loss of 7% revenue in average.</font>
Well, not really, since many seats in the back are don't really add much to revenue.
If an airline consistently flies with empty seats, it probably makes sense to take a few out.