"Violate the Constitution" has become an amazingly flexible concept.
I seriously doubt the framers of the Constitution would have agreed that "public use" in the Fifth Amendment meant use by whatever private entity could pump more money into government coffers.
In fact, odds are that the amendment was written precisely because property had been, in that time, confiscated for arbitrary reasons by both governments and the wealthy who had the most influence in the government.
Taking private property for other private owners, simply because one could show that the general public would benefit financially, is a very bad precedent, and now that it has been "legitimized" by the Supreme Court, I expect to see a lot more of it. I can think of a lot of directions this can go, none of them good.