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.
Yeah, this is something ive thought ab9ut too. Something like a tax rate that approaches 100% the more you make/own, so that you reach a pt of diminishing returns. The tax money would need to go elsewhere than the national budget though, so as to not just move the dangerous concentration of wealth elsewhere.