If the legislatures make a law that changes this - then some one will sue that it is unconstitutional and the end result will be that the law will be found null and void by order of the court. Once the courts start making laws - which is what they did today - the game is over.
That is not true. The Supreme Court has ruled that the U.S. Constitution does not prevent local governments from seizing property for this reason. It didn't rule that the Constitution forbids the States or the Congress from prohibiting such seizures. In the case of the Congress, there would be federalism questions (which I think valid) but it's difficult to see how it wouldn't fit into the Commerce Clause as interpreted by the Court (wrongly, in my opinion, but so it is). Most especially, it doesn't prevent the Congress from amending the Constitution itself.
If the support is truly there, the laws will get amended accordingly.
But, the key is for people to feel that this affects them personally. So far, the signs are good. If not, then we're in trouble. The boiling frog will be almost cooked..
Any SCOTUS justice authorizing theft by illicitly using the "takings clause" while ignoring the "public use clause" will be hung.
Then we might as well stop playing, we were beat a long, long time ago.