A lot of places around where I'm at (NYC) get their pies/pastries from a neighborhood bakery. It doesn't seem to me that there is much of a difference between b

A lot of places around where I'm at (NYC) get their pies/pastries from a neighborhood bakery. It doesn't seem to me that there is much of a difference between buying a pie from the bakery or buying a slice of it from the restaurant 2 doors down. I'm also curious how this affects Sous Vide. If they vacuum seal and freeze on site is it still "home made"?