It is not desirable to have separate content directories for every product - when daz Studio is looking for a file it takes a relative path (/data/3D Classics/Ford B 400 Police/ etc. here) and sticks it on to each content directory in turn until it finds the referenced file or runs out of content directories. Having a great many content directories, as a result of making a separate one for each product, will start to have a noticeable impact on load times. Checking for a file at a given location in one or a few consolidated directories will be much faster, even if the directories do get quite large. That is why the advice in the product readme is poor.