"The only difference between SV and any other city is people are willing to throw money at ideas with no chance of ever turning a profit which isn't really a si

"The only difference between SV and any other city is people are willing to throw money at ideas with no chance of ever turning a profit which isn't really a sign of a healthy ecosystem." And some off then even work? like Snapchat, Facebook, Twitter, AirBnB, Uber etc. Looking back to the time they where funded all these ideas look like sure lossers.