If companies lobbied for that to happen, they'd be laughed out of the courtroom. Not to mention how up in arms consumers would be. If companies stop publishing something and don't sell them anymore, they've lost all the rights to make a profit. They feel they're beyond that, and trying to get back all the money they refused is petty.It's a wonder (and perhaps a good thing) that it's not illegal to buy used merchandise, considering that the companies making them don't make money when people buy things that were already purchased.
On the other hand, scalpers. From my experience there's a period from between the DVD's getting discontinued and getting in the hands of greedy scalpers when DVD's hit remarkably low prices online. But that's a very thin time line, otherwise said scalpers buy them all up then charge a fortune. That's why I hate when things go out of print. I fail to see why Sony doesn't rerelease the good Transformers movie again, since even used copies go for a fortune. Companies don't get this money, but it isn't exactly stealing. It's not wrong or illegal, just sucky. But the companies have nothing to gain by illegalizing these transactions. They've already made their money, the rights expired... what are they going to do? Unless of course there's an international thing going, but they only really try and stop that in Japan because American releases are far cheaper, even with shipping than their wacky expensive disks. A box set can set you back like a thousand American dollars. Eh, but they come with toys sometimes.
As for Snowth's comment... I agree. Stop blaming Disney for doing stuff other companies have been doing for years. Rights are insane, crappy TV shows no one likes literally clog up store shelves, and most of everything can be seen legally or otherwise online. If you're lucky, a license can change hands and go somewhere more independent. Even that's not a guarantee. it was almost a decade between when Shout release only one set of Inspector Gadget and some weird indie company got the rights and released all of it, including the rare second season. Ditto Heathcliff and Mill Creek... and even then, they barely finished the first season. No season two announcement at all.