I think a couple of very important points are being missed here.
WHF, the mainstream manufacturers and their dealers all work together on this. WHF need a steady stream of product and are embraced by the big manufacturers who have new and 'revised' (Mk2, SE, etc, etc) product to promote every month. The constant cycle of reviews and awards generates interest, from both customers and dealers alike, which pretty much drives the budget end of the market where product is sold largly on the back of reviews, awards and price.
The circle is squared by the publisher selling advertising space to the big manufacturers and their dealers, in business terms, a virtuous circle.
What might be more difficult to get is that more 'specialised' (or 'elitest', 'snobbish', insert your own term) manufacturers/distributers simply are not interested. They know that there products are different and are sold through dealers who simply have a different way of doing business, selling by demonstration rather than review and 'reputation'.
Brands like Creek, say, have a small product range and models may remain in production and largely unchanged for several years compared to the constant turnaround and new products from the mainstream companies. A good review for a Creek might generate a little interest but nothing like the constant exposure that the big brands get.
Sure they will take the odd review when they get it but that is not the focal point of their marketing, which is mostly focused through their dealers.