I would hardly call agreeing to disagree, whining. You are once again missing the point. There is nothing wrong with protecting your interests. It is another to compete with your own customers. That is their choice to make but that doesn't mean that I can't make my own choices.
I already made the suggestion to turn them into extensions so they could be protected with a key code and it was rejected because it would require Dreamweaver. There is nothing you can do if you are selling source code that has to be modified.
The original post:
At $99 or £75 per site it is cost prohibitive
That is a statement of fact, not whining. This is the second time we have had to deal with this, so I don't think it's likely to get better. If you think there is no loss in value to go from unlimited sites to one, then you can make that decision for you. Let others make their own decisions for what makes sense in their business. The cost of using the solution for 10 sites just went from $100 to $1,000. I'm glad you're in a position where that kind of change is so trivial.