As far as I know there has never been much evidence that government tax receipts increased significantly as a result of introducing IR35 even after the initial

As far as I know there has never been much evidence that government tax receipts increased significantly as a result of introducing IR35 even after the initial changes when some "contractors" went permanent as intended. This question has been asked for probably 20 years now and never had much of a convincing answer. The usual government stance when they give one at all seems to be that they couldn't possibly reverse the rules now because it would be inviting new abuse to start. Also I have a rock to sell you and if you carry it around with you all day it will protect you from being eaten by dinosaurs.