This might actually lead to that, depending on what kind of lawsuits arise from this change. Which could mean there will be pressure from others who don’t have a stake in the “unity install fee” game but do have one in the “wants to change terms at a whim” game.
Or maybe it will threaten the “by continuing to use this, you agree” clause instead and open up a path to continue using a previous license agreement if you don’t like a new one.