One of the main advantages Binance fitted into their own token is the token burning process which almost guarantees a gain in price with the decrease of token supply. Burning dates are not fixed, they are loosely set but the exact date is only known couple of hours before the burn. They’ve been making enough profit to burn about 2m BNB each quarter.
In July the trading fee with BNB discount will increase from 0.050% to 0.075%. All else being equal, this will increase Binance’s profit, increasing the buy pressure on BNB from the buy & burn program.