Why is it the only chair available? Why can't it be replaced? Who decided to put that chair there and why does that person thing its sufficient? Why do you require a chair in that yard? Is it someones yard or is it a public space that happens to have a plastic chair?
Could you answer at least one of these questions. Any information that isn't just a picture of a broken stool would be nice.
Make it expensive to change the weight of a product. Standardize the size and weight of a given type of product. Require the packaging to alert consumers that the weight have changed in the last year and how much it has changed. Tie the trademark of a given product to a certain weight.
Are these good ideas? I don't know, I literally made them up just now while shitting. I am sure the president of the United States could hire at least one dude to come up with better ones.