Which is why they did not buy the company. The company is going bankrupt and sold IP to recover money to pay some of the debts with. If you did that to a healthy company that might be fraudulent, but when the company is going under either way it is probably not.

What if you instead of buying the company you buy the assets? Why would anyone buy a company with negative value?

Once the operations have failed the various creditors likely benefit from reasonably priced sales the assets.

Clearly that did not happen, because they stopped support for warranties. So only a moral, not factual, argument could work here.

Unless you buy the company in liquidation (chapter 7 style) which is more and more what this seems like.