hoser, no one is walking with Mike lock-step here. If you would have taken the time to read the 26 pages in the thread I mentioned above, you'd see that there a lot of people (including me) who don't just concede to Mike just because he's the most prolific poster on the forums. He and I compete in one of the worlds and we've had many disagreements. We also happen to get along just fine.
I will continue to disagree with him and others on the strictly theory portion of cash in trades. This may sound elitist, but even though I think the average person playing HBD has a very high overall intelligence, most have a limited understanding of economics. There are solid voices on both sides of that issue.
If you play this game long enough, you'll hopefully realize the value in keeping consistent competition in a world. Owners who work together to agree on a "no cash in trades rule" are doing so with that intention. I imagine that you can find worlds that do not have a restriction on it. I would say that a world like that will only work well if there are 32 owners who have 1) a really deep understanding of economic principles and 2) a long term commitment to remain in the world. Good luck actually finding that combination.
The minute you have someone who doesn't have the understanding or the commitment, that world would unravel, leaving a whole bunch of well intentioned owners with teams they've invested time and money in in what is lovingly referred to around here as a "'tard world". Again, all of the points you've brought up, and most likely the ones you're going to bring up have already been brought up. Many times the arguments against them don't hold water in a pure logical sense. But you can't separate that from what actually happens in a game played on the internet by a population that includes a wide variety of commitment levels and ability.
The long-term viability of a world is very important to those who have invested in it. Restrictions on cash in trades work. Despite the fact that you (and I and others) disagree with the theoretical validity of them.