Why? Because capital gains taxes are now at historic lows. So instead of sheltering the cash and then paying much higher capital gains taxes on the money later on to take the cash now and pay the low capital gains tax.
So, what the low rates of taxation do, is to discourage money sheltering and encourage more immediate investment and tax payment. Interesting huh? Still, I have this notion this little story will not take root in the heads I hope it does.
That is low taxes do not necessarily mean low governmental receipts.