Some projects are surely going to disappear and many exchanges are going to close their doors i suppose. Only coins with strong supports are going to survive.
- Not only will some projects disappear, I believe most ico projects will disappear when they do not receive the appropriate investment, the collapse of bitcoin always creates very strong and direct influences, especially ico projects, everything is always very much related to bitcoin. The exchange will not close as you say but maybe they will no longer receive so much profit when investors and traders give up, trading volume will definitely become very low, strong crypto will still exist but I'm not sure people are interested when this situation has clearly stated that their loss is huge