The gray market recharge volume on TRON is enormous, and Tether continuously increases the issuance of USDT on TRON, with total volume exceeding that of ETH. This is not due to Sun's marketing, but rather a result of commercial choices driven by Tether and the merchants engaged in trading.
The number of active addresses on TRON has surpassed that of Ethereum, with over three million daily active users. One reason for this is that gray market recharge essentially treats addresses as consumables.
The feature of requiring energy for account transfers on the TRON network means that these addresses, treated as consumables, must choose to rent energy directly, using it and discarding it. Thus, a business has emerged that is not widely discussed but is very profitable.
Large holders pledge TRX to the payment teams that facilitate trading, and these trading teams develop BOTs for leasing services to provide energy leasing services for downstream recharges.
Every time a new address is needed, funds are transferred and then moved again, renting energy just once, and it's over once used.
This is such a simple business: energy leasing yields an annualized return of 25%. Large TRX holders enjoy the returns from leasing, and even during this process, the trading merchants continuously buy and hold TRX, gradually becoming large holders themselves.