Dior and Louis Vuitton love putting their logos all over their products, especially accessories. I think it cheapens the brand, but i'm not their marketing person.
Even with those if you sort their products by price the higher cost ones have a subtler logo because you're right, it does cheapen the product. The higher cost/higher end from these brands are basically a separate company with a shared name.
The lower cost ones have the logo because that's how the people you're around will know. The higher cost ones don't have the logo because the people around you will recognize quality.
The lower cost ones have the logo because that's how the people you're around will know. The higher cost ones don't have the logo because the people around you will recognize quality.