Its actually interesting (bit on the spammy side) a lot of sites get built by a developer who doesn't relay pay any attention on to its intended function.

And designing the right architecture for example do not stuff all your sku's / PDP on one single page with just images, no text and a page title of "Products"

And a lot of businesses a page will have to serve multiple requirements: a laser focused ppc landing page targeting one term well that's a lot easier.