Because of our model of money, DPOS almost always, immediately goes to POS.

Just based on the Pareto distribution. The 80 20 rule.
20% of the people have 80% of the wealth, because they made 80% of the products.

Given any amount of time, the distribution curve always looks like a power cure. Even if the payouts are extremely even, and distribution is based on effort put in. Some people will put in more effort, or money, or resources, or just be better / more popular.

So, the power ends up in the hands of a few, and even dolphins are excluded from the vote.