I understand your position better now. It's a valid argument. For now, I think XRP holders' interests coincide with the Ripple Corporation (both have an interest in XRP's value increasing - it gives credence to the company and constitutes good publicity). However, if they ever do want XRP to be widely adopted as a currency (as opposed to an investment vehicle), they may try to implement some sort of monetary policy to control volatility (which is highly undesirable in a currency). This could have the effect of limiting XRP's profitability to the holders, to the benefit of the company.