Some populistic thoughts:

I see the problem and I am on your side, this could (and pobably will) harm steemit.
But really: WHO whould have thought for one second that this kind of things will not happen?

One of the first things I thought was... NICE the big enterprises like paramount, disney and all these Hollywood craps could buy into steemit and flag the sh++t out of these guys while pushing steemprice to the moon ;-)

The next thought was:
Nope. Will not happen. They will probably sue steemit and / or d-tube resulting in a gray zone / legal war like with megaupload several years ago.
A lot of publicity will result... nice (possibly... or not. Megaupload was dead after that)

Actually I think we have to redefine what intellectual property is and how it should/could be monetarized. Steemit is one of the needles in the flesh of the giant, driving this thought process forward.