At present, there are many projects on the exchange, but most of the projects are unlikely to be successful, because the competition is fierce and there is not a certain number of user groups. This exchange will eventually fail.
your talking to ieo's or the coins listed on the exchange ? if you say projects on the exchange that mainly refers to ieo's . ieo's are new and the competition is still slim so the chance for the projects are likely to be succeed . but if you are dealing about the coins , yes the competition with them is big . only few coins can survived and mainly those coins can survived are from the big exchanges . many exchanges are required because many coins are being created everyday .