Erase the passive thing in investing on casino bankroll since there's no something like that and even if you go with the house still it has a chance to lose and your investment will go negative. So better come to real situation and accept the risk if you want to go on this option, you cannot earn a big thing here but atleast you can get a portion rather than choosing to store it on your wallet.
Correct. That passive thing mindset will just lead to expectations.
And besides, investing in a gambling site's bankroll requires a higher capital to see the changes. For example, a
BTC1 is already a decent amount but in the long-run, we might see only low gains even we count for a year.
The good thing about this investing part is, the money isn't sleeping and who knows the outcome will be good and worth the wait. Just choose a reputable site as it's like storing our money without our control.