Doubt that marketing cost is the real reason. How much they would have saved with that? Few thousands per week? Compared to what they spent daily on platform competitions that is nothing. The only reason I see - their signature campaign on BTT does not bring much new customers.
Its because they doing there signature campaign here seasonal and short time span duration. Stake, Duelbits, Rollbit and other reputable casino here has a long running campaign for more than years and see the result for yourself. You cant expect that customers will easily see the signature ads here if the duration is just short. It requires time to build momentum here but its worth-it once you establish the market for the casino.
FYI. All casino has daily tournament. Dont tell me that big casino with long running signature campaign here doesnt get anything on there campaign here.