I completely agree. I was under the impression that sales pro users were the only ones to create products but everyone else could add products already available in the library, is not the case. Is true for us too, the sales team is not the one dealing with other products as that is done by after-sales when including add-ons, etc.
We will not get a sales pro license for someone who only needs to add products, remove them or see them. The feauture should be available to all types of users.