dented or otherwise damaged cans, what do you do?

This article in yesterday's paper caught my eye.

Looks like mould to me.
But.
Forget the sensational headline for a minute and focus on the can.
Notice how it's a little blackened around the bottom rim?
I'm not sure it shows, but it looks like the can has been standing in wet conditions, the wrapper looks a little wrinkled too at top and bottom.
Was it like this when it was bought?  If yes, why buy it? 
If no, then how was it stored in the home environment?

 Use by date.
Usually irrelevant, unless the can has been opened. We all know that once a can is opened the contents need to be used immediately, especially baby foods.

She mentions somewhere in the story that the contents appeared "a bit runny".
This happens when  food is given to the baby directly from the can, (or jar) with saliva from the baby's mouth being transferred to the contents, which then begins to break down the molecular structure of the canned food.
This isn't immediately apparent, but by the next day, the food will be runnier and not suitable for consumption. 
It will be contaminated.
If you know your baby will not eat the full contents, it's far better to spoon a smaller amount into a bowl
and then store the covered remainder in the fridge.
To be used within 24 hours. Or less.

 The woman at the centre of the story is the child's grandmother.
 I'm wondering if the can was already opened when it was brought to her along with the child and for how long?
I could be wrong. I frequently am wrong. The can could have been unopened and in good condition....
and of course the grandmother is right to bring faulty goods and contaminated foods to the attention of the media and the public.
Anyway... moving on....

 Here is the real point of my story.
The can was probably damaged after it left the factory. 
Yes. Damaged during delivery from the factory to the warehouse, or damaged while being stored, or damaged during selection and delivery to the stores.
My customers and I have noticed a huge increase in the number of dented cans on supermarket shelves.
No one knows how or when this happens, but it is happening too often and to too many cans.

Not only baby foods either.
Check out the canned soups. The canned vegetables.
Some cans are so dented they're practically folded in half. And they're still put on the shelves.
 I kid you not.

 It's not only "my" supermarket either. I've seen it everywhere.

Like the above paragraph says, consumers should not buy these damaged cans. But sometimes the entire delivery is dented to some extent. What is the customer suposed to buy?
 Also some customers don't realise the dangers in a damaged can.

I'm treading in dangerous water here. There are specific rules and limits about what "we" are allowed to write or picture on the internet. We've each been given a Code of Conduct booklet.
But I'm not singling out any specific supermarket chains, I'm not naming any names, I should be okay.

Here's the thing.
If so many cans are arriving at the stores damaged, why are they not sent back to the warehouse as unsaleable? Why are they allowed on the shelves?

 I realise that by returning shipment after shipment, stocks on shelves will run low and stores will lose sales and money.

 But isn't it better to return them to the distribution centres and put up a notice apologising to the customers and letting them know that the store is concerned with their health and food safety?

I'm also sure that if all those damaged cans, from all supermarkets, were returned to the respective distribution centres, those responsible for these centres and the deliveries, would start taking more care
with their own storage and deliveries systems. Because they'd be losing money too.

Am I right?