If they really were interested in making a product, they'd obtain the neccesaries to make it. Simple as that.
Although I find it hard to believe, it would seem they must be satisfied with the income from whatever their best selling stock is, for whatever existing action, and refuse to inlet blanks for new models.
Does seem a strange way to run a business though. I think I'll be dropping one of the true custom stock makers a line when I've saved a bit more.
Put on heading 270, assume attack formation