I too would like to see more ARCs, but the reality is that apparently most modeler don't care for this format. If the demand were strong, you bet the manufacturer would cater to it.

I also suspect that for the manufacturers, the costs of producing ARC and ARF are probably not that far apart. Most of the ARCs I see (giant scale planes not withstanding) don't save the buyer much vs. the ARF. Often the cost difference is less than the couple of rolls of covering it takes to cover it.

Since I'm an eternal optimist, I always try to look at it on the bright side instead of grumbling and griping about what could have been. To me, any ARF can be converted to an ARC in about 10minutes. I've done this to varying degrees to just about every ARF I bought recently. You'd be amazed at how a little rip & recovering job can transform the looks of an ARF. And if the ARF uses shelf paper covering, then I rip it all off. Like I mentioned above, even if they make an ARC version, it probably won't cost a whole lot less anyway, so I don't worry about the little added expense for the monocote.