This is actually a big problem.
I have seen senior researchers try to take research that should be it's own article and try to include it in their paper to take ownership. I have seen people who have done a lot of work on a project be not included in the authorship list and I have seen people taking a long time to publish something hoping the other author will give up and forget about it.
They say that research is a politics game. You need to make the right person happy with the smallest input possible. I wish I had the answer on ownership but I think its a system that may not be able to change because there is no one governing it. I think if you wanted it to change you would have to make the journals change.
RE: Academic Authorship - Anything Goes!