I've heard this statement made many times about start-ups. The problem is often that, in changing their economics to generate a profit, they could allow competi

I've heard this statement made many times about start-ups. The problem is often that, in changing their economics to generate a profit, they could allow competitors to take all their market share. In the case of AirBnB with their $93b market cap to get a P/E of say 35, they would need to generate $2.6b in profit, so could they do that and not crater their market?