Not to mention that some actors are much more selfish than others.
Thus, you have inherently different levels of selfishness which ultimately lead to the emergence of some dominance hierarchy that creates a disproportionate power differential over time.

As you, I am not saying that this is bad, but I am far more willing to place my trust in a company that has something to lose from fucking up (e.g.: 20 billion Ripple). The stake that the owner's of the company hold are what insures their integrity.