I got your point of having a firm conversation about this issue, but the agency is not mine and my concern is to see the client sacking us off. That's why I'm trying to find a way to cope with this lack of content.
I'm agreed we need unique product descriptions, but how could we write original content for products such as windows, doors, furnitures, or some products for B2B like spare parts of industrial machines?
I mean writing some original piece of content for common products such as food, clothes or gadget is pretty easy, but for example, when you look for windows and doors you need to read technical specifications - in other words numbers, measurements - and benefits. We can't change numbers, we can write original content to describe benefits instead, but writing benefits won't mean mocking up facts and things. You can write about benefits of a product only when you know that specific product and the industry. IMHO when you are THE random guy who writes anything you will only produce thin content.
So far, in my career I found very hard to face clients - too many - who expect results by a touch of magic, like they have hired Harry Potter!
I got it may be even worse having every page linked to the official manufacturer page in a schema.org product mark-up, so my last move is to put down original description for the category page and forward to the client to get the approval. In this way I hope to start seeing some benefit while I am pushing them to write original content.
Thanks for the response
P