I don't know how other gamblers feel but as a gambler I think BTC price doesn't have much effect. Because when gamblers place a bet, they don't think about the BTC price, but how much money they can put in that bet and how much return they will get. Until a gambler converts gambling ‍assets into fiat, he doesn't realize any change in bitcoin price going up or down. But if gambling with Bitcoin, if that Bitcoin is in the wallet, a gambler will definitely be profitable there due to the holding. Also we do not find any data where the number of gamblers has increased and decreased due to bearish or bullish trend of the market.