I can't think of any packs of photo paper I've opened that contained a sealed bag. Kodak used to put the paper in a folded sheet of black paper, which was then in another folded sheet of black paper. Of course, that was before the black plastic bags.
Just an aside: Isn’t it or was it standard practice to use the singular for an entity? Such as, “I hate Walmart. It’s evil.” I’ve noticed only in the past ten years or less its become more common in Europe/UK (the plural pronoun - now it’s spreading here to US). Perhaps I’ve missed something grammar-wise all these years with selective reading and writing. “Exxon, it had a profitable year.” (?)
A lot of times "they" is used instead of "it" because it is understood that the speaker is referring to the people who work at the company. Consider this example:
"The supermarket overcharged me, but they promptly refunded me when I called them." VS "The supermarket overcharged me, but it promptly refunded me when I called it."
We tend to not impart agency on inanimate objects. So applying "they" and "them" to an entity, even thought the entity is normally referred to as an "it", is normally done when the entity acts in some way. It makes sense since the acts of a company are performed by people.