Not only are they forced to take old electronics back for free, they also report you to the police if you try to remove anything from their forced junkpile.
There is really big money in this received hardware, both in it's recycle and on getting it out of circulation so you buy the new products.
If you head off a guy who is about to throw away some old hardware however, they get really unsure about how to treat you. They want to claim you are stealing, but at the same time they are unsure about from whom...
(Yes I like to take a peek and see what is in the bins, I once "found" 20 boxes of fiber patch cable giving me a nice kick for my home fiber project.)