I tried trading on this dapp after receiving an airdrop, the interface is really bad, transferring USDT and ETH on-chain is still very troublesome. It feels like they spent a lot of money on promotion, paying a lot for both promotion and airdrop.

The New York Stock Exchange was established in 1817, setting an expensive and stringent threshold from the beginning: new members must be nominated by existing members and voted on by current members. Not only do they have to pay a membership fee of $25 (equivalent to $3,374 today), but they also need to have one year of experience in buying and selling stocks. Even after paying the expensive membership fee, each transaction requires a commission to be paid to the exchange.
However, it is puzzling that even with such stringent membership requirements and commissions, there are still many traders outside the New York Stock Exchange who wish to join but cannot. Economists have proposed two theoretical reasons for this.