But it will be until and unless people start to complain to the companies about what they are doing. I often think an effective method might be to write (using the mail, not electronic mail) to the CEO, saying that you are not complaining, but asking for assistance in understanding, and can he please help you to make contact with the appropriate person in the company who can explain to you how it helps you for the information on the actual loading to be so hard to find.
You could follow up the inevitable failure with a polite request for an explanation of why the person who decided not to make the information readily available and who cannot show how that helps you is being allowed to deliberately do things which are not in the interests of the company's customers.