I used to think that was silly too, but @beththomas, you might be onto something with the talking part.

Custom curved glass can absolutely wreck your schedule, man.

My uncle's butcher shop in Buffalo started vacuum sealing their cured meats about ten years ago. They said it tripled the shelf life compared to the old paper wrap. The real trick is getting all the air out without crushing softer items like liverwurst. It let them prep bigger batches for the week without as much waste.