It seems to me that the point was missed...instead of focusing on who has sovereignty over what in space, the real story is about who can claim ownership of whatever rock just hit the ground at whatever location. it is not always the case that if it lands in your yard its yours...where and when will the fighting begin then?
Sure, the topic or legislation seems to imply prospecting rights about space stuff, but if I read it right, it seems to cover "material" and that could imply what is already on the ground as well as in space. So just what did the company find that made them want to lobby this piece of legislation through? what does this mean for those companies or corporations that already have in their possession, a piece of rock from "out of this world"?