Why aren't there better panels being made?

[rockdogz]

As I talk to more body shops about replacing body panels, they seem to all want to keep the original metal at all costs, saying that repro panels are just not good quality in terms of fitment and metal content/thickness.

Now, I understand that there is a cost associated with increasing the quality/thickness of the panels, but if someone came along and charged double for the same panel as a repro but had it be the same quality as an OEM panel, don't you think they would sell? Or would it cost more than double? I just find it hard to believe that the technology isn't there today to stamp a more accurate panel. Maybe the expense for materials is just too high?