Maybe that could be the reason why the price didn't go up that much, because not so many tokens were burned it might be very good to reduce the amount of supply available so that it is possible to increase the value and scarcity of the price of BFG tokens, I don't know much about how this BFG token works , as far as I'm concerned I only have a few gambling tokens in my possession as well.
But somehow BFG is able to gain the trust of investors and traders so that the trading volume remains active every day so they can maintain the value of their tokens, I don't know how their team works whether they only focus on the gambling business and not on their tokens which are only given to users for free and others.
Also one reason could be the fact that BFG token is build on centralized entity, and future of this centralized entity is very much in doubt. The one greatest utility of this token was the fact it paid dividends, which have been constantly going down from the start. And so have the amount of users, that are eligible to use their site.
I personally can't see any reason or plan why volume/proits should go up again. One of the mechanisms for volume was mining, but there was not any real game plan on tokenomics or where the volume would come after the era of mining those tokens was over.