A huge part of their appeal is unusually low fares. Raising their fares to a point of profitability is going to hurt what many customers like about them. But ma

A huge part of their appeal is unusually low fares. Raising their fares to a point of profitability is going to hurt what many customers like about them. But maybe their increased usability is still more than enough. Raising fares 7% may get them to profitability, but does it get them to the point where a $70 billion valuation is justified?