The projects based on the blockchaine of the ETH are easier to add to the exchange, that the projects that have developed their own blockchaine. I have in my portfolio a coin with own blockchaine. They could not enter the exchanges for a long time, so they made their own gateway for a decentralized exchange.
Yes, but despite the fact that many projects are based on Blockchain Ethereum, they still have great difficulty listing their tokens on the stock exchanges.