This would stop the currently exponential pace of growth from outpacing what society, and regulation, can adapt to. Thus avoiding the inevitable crash that will happen when we lose control of the exponentially accelerating train of technology, and it flies off the rails.
I remember seeing a similar effect when conventional lights became forbidden in the EU, followed by energy saving devices suddenly becoming widely available for decent prices.
EU expectation was now saving 80% of the power used for lighting.
Reality was that people instead just started putting up twice as many lights, and each with maximum available luminosity instead of the few dim ones they were content with before…