i heard that investing in gambling sites bank roll is more stable profit than investing in other thing. im planning also to invest bitcoin on a gamblings sites that offer bank roll hoping that i can gain enough and more stable profit from it than wasting my bitcoin in gambling that im not even sure if i can get my capital from it. thanks for this thread looking forward on your investment goodluck 
Not all the time but in general they are profitable, you can actually check on the reputable gambling sites that offers investment program. Honestly, I tried investing in gambling sites but I found out thru experience that we should put a decent amount if we are expecting great return. The return in terms of percentage is not that high but at least we can have consistent income, ideal for investors who has a big capital.