Collective betting can increase the staking amount but there are some dark sides to collective betting like confusion in making decisions, not everyone in the group may agree to bet or how it should go, when they should cash out or quit. Collective betting can also be a seed for disunity between friends as one or more persons from the group can be blamed if it doesn’t go right.
For me collective betting should just be for fun and get together and no matter the outcome it should not be taking too deep.
It’s true that this method can increase the staking amount but still you will need to divide it to the number of participants while the odds is still just the same.
It’s good when your aim is to have more bankroll to absorb losing streak and still recover. Also participating in tournaments since you win tournaments prize due to the increased of wager size.
The only dark side of this method is the trust issue and confusion to decision making because multiple players is involved.