In my opinion, the near-perfect analogy to pool-hopping is a game of poker where some people know the odds and the others don't. The ones with the knowledge (who put it to use) have a clear advantage.

Similarly, in both cases, the more people maximize their expected value by playing the odds optimally, the less there is to win. Ultimately, if everyone pool-hopped, the PPS pools would simply halt and the EV would drop to 0.