Why would have shareholders get extra returns from this scheme? Lowered taxes is a one off event. If you had constantly lowered taxes, like we had constantly l

Why would have shareholders get extra returns from this scheme? Lowered taxes is a one off event. If you had constantly lowered taxes, like we had constantly lowered interest for a couple of years, then that could have been expected to be reflected in the share price. Or if you could isolate a short time period when they started doing this, then that would have affected earnings and likely the share price. But once that is the way the business operates, why would shares continue to rise? It does not make sense.