At best 10% survived. 50% is WAY to high as most serve no purpose whatsoever.

This is like the days of the dotcom boom. So many companies had value just because they owned a dotcom, but the "burst" didn't end the internet. Rather is made it stronger as the scam artists running IPO's with nothing more then hype were done away with and a new higher standard was applied against the companies that already existed. Some of the most valuable companies in the world survived this time frame. I feel that is what will happen with the current coins. The ones that survive will thrive in a marketplace that isn't cluttered with so much trash.