No, because these licenses are named ie contract is valid only between Microsoft and the $company. Any other entity is not the subject of the licensing contract.
The only way to resell something from a bankrupt company is to buy a retail box versions of software in the first place and LTSC is not available in retail.
It's a bit more complex than that. Windows licenses come in various variants with one common trait: they have very specific conditions regarding license transfer. Basically, Microsoft tries to define a very limited set of conditions that let you transfer the license. The problem is, not all of these are enforceable in all jurisdictions. One example:
> If you acquired the software from a retailer as stand-alone software, you may transfer the software to another device that belongs to you, but not more than one time every 90 days (except due to hardware failure, in which case you may transfer sooner).
It is highly probable that, if anybody cared, you could win such a case in a European court but I'm not aware if anyone bothered to try.
You can't buy something for $100 and sell it for $20. Well, you can, but this is not a sound business model.
It's always amusing for me when people assume they can buy a 'legal' copy/key for $5-10 'somewhere on the net'.