Exactly and gambling is not a good way to earn bitcoins. Gambling should be limited for a fun like once in a year, If it becomes addiction than surely we are gonna loose all our bitcoins at the end of the day.
There is always pros and cons about whether gambling could make us rich or not. I like sport gambling and do it in every week, but just consider it as a match sweetener, not a method to growing our money
Well , you can say exactly the same about trading too. The price is heavily manipulated by the elite whales, we are just peasants trying to profit from the waves those whales create. We can't do much about it. We have to go with the flow and try to profit along the way.
There is a strategy to get profit in trading, you can seek it in
https://bitcointalk.org/index.php?board=8.0 . In gambling, there is no potent strategy imo, it just depends on luck.