But still you are taking from one area where you have no claim and dumping it another area where you have no claim. It's not property, at best it would be salvage and therefore a free-for-all to scoop it up.

There are just too many jurisdictional issues to make it practical w/o a huge initiative to update/refine international law in this sphere. Not to mention that dumping stuff from orbit to earth is regulated and there are penalties for endangering life/property.