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Basically my idea was, not pouring all escrow funds to be with one or two escrow agents but spreading with multiple escrow agents so the probability of exit scam or lose of funds would get lower.
Spreading your funds across multiple escrow agents does not lower your risk. It actually multiplies it. True, the damage caused if one of them decides to exit scam will probably be smaller, but the probability of a loss increases proportionally with the number of escrow agents involved.