I tend to agree with those who have said to just take it as a source of pride that others are using your roms.. although I do like Mooingrhino's serial idea (except that it's a royal PITA to manage to be online at the same time as you to get one)...
I think when it comes right down to it, ALL of us are using someone else's work to build our own, to some extent.. Additionally, there WILL be kitchens released for the 6800.. In fact, DCD already has released one, and the knowledge of how to build your own rom becomes "worthless" at that point.
I totally understand the concern of folks like amoamare that by releasing your roms, you're ultimately just creating competition for yourself, but that's the nature of free enterprise, and trying to keep your stuff secret is counterproductive, because if nobody shares their ideas, this site eventually dies, and we all ultimately fall behind the manufacturers security teams. By creating a united front, we have the strength to stay ahead of the curve, but when people start getting selfish, we all lose.
For what it's worth, I'm stating this as someone who doesn't know how to build roms, and who has sold flashed phones in the past (I don't anymore. The headaches aren't worth the profits)... I've never used anyone's roms for anything besides my own personal benefit, however... All the phones I've sold were either using a stock rom, or a kitchen rom.
Ultimately, I think MooingRhino's solution is the best, if he can figure out how to implement it without having to wait to catch him online. The fees he charges for extra roms are totally reasonable (in fact, if I were using his rom for clients, I'd gladly pay 3 times as much), and it's fair that he profit from his work. If he can figure out distribution, he's got a winner.. (and should sell his serial system to anyone else who wants to use it at a profit, in addition to selling his roms)... However, if you're going to profit from selling roms, you need to remember to kick some of that up the ladder. If you're selling roms for a profit and don't continue to take care of Helmi, colonel, etc, you're no different from the ebay scum. (not accusing anyone of anything)