I participated in the cryptassist ICO a few months ago, and I chose this out of the many projects I could have done the ICO, but still no listing.
This is because of the market, but I strongly believe that if the project is good enough, the team should not be scared of listing
Indeed, many projects do not want to issue their tokens to the exchange, because they are afraid of a significant reduction in their prices, respectively, this may affect the development of the project in the future. Regardless of whether the project has a working product or a good team, they are still waiting for favorable conditions to release their token to the exchange.