Well, that's all information I could get from (say) my local grocery chain, as an example. I can go down and simply ask for the specifics of any policy relating to their interactions with customers.

That generates the sort of predictability that makes my dealings with the company as transparent as I choose -- that is, I need not be surprised nor in doubt in any ordinary circumstance, because the company is willing to lay out the rules that it uses to deal with me and with others like me -- and it is willing to stick to them, even when they become awkward or inconvenient. There is a high level of assurance as a result.