The basic reasons behind why most of the new crypto coins find it difficult to enter the crypto market is that, most of these crypto coins have projects that are not really relevant to either the financial ecosystem and the crypto ecosystem to be specific .. once the project has no relevance, its crypto coin will not have impact on the crypto market...
in my opinion the main reason many projects do not enter the exchange is the sale of tokens that do not reach the target, ultimately the funds allocated are insufficient to register to the stock exchange, or it could be that developers who really planned from the beginning to reap profits from the project and run off somewhere.
then it's better to be thorough at the beginning than sorry later