Workers are not to control production in a capitalist system like a pool in business. The market, or worker, will choose a pool that offers the best value. The minute you introduce communism into your business, you will become inefficient and thus provide less value to the workers. Wasting productive power due to an irrational argument from a profit side is inefficient. No profit, no pool.
The intelligentsia often forget we are dealing with naturally instinctive people and not numbers...
So, I disagree with your opinion from a socio-economical perspective. Inaba's example is a good case in point.
Miners are the customers of a pool. Running an honest business means maximizing your profits under the constraint that you do not deliberately mislead your customers - which is exactly what you're doing when you do merged mining when turned off by the miner, unless you've gone to some efforts to clarify this is what you do.
If someone thinks he can increase his profits by running a dishonest business, I can only argue with him on ethical grounds, not socio-economical.