Flagship stores are a form of advertising. Many many retailers embark on this journey. Does advertising work? Or, more importantly, which is the case here, does

Flagship stores are a form of advertising. Many many retailers embark on this journey. Does advertising work? Or, more importantly, which is the case here, does selling your store shelves to specific brands hurt? (rather than stocking what's selling?) Some youtubers have done in length videos on Star Wars toys that sat on shelves for years.