First off,,, "Welcome to the Forum!"
Now,, your own comment; "Are you suggesting the market place for the Precision WMR is insufficient to justify speed loader development?" is most likely the main reason none are available.
I go to the annual SHOT Show,, where all kinds of new products are introduced. But one very common theme is a simple business thing. You have to be able to build AND SELL, a lot of anything to recover the expense of design & manufacturing any new product. I haven't seen any magazine loading tools for the Ruger Precision WMR caliber bolt action gun.
I'm not saying one hasn't been made,, but I'd bet good money that very few would sell.