A rule of thumb for invested money is that it doubles every 7 years. It’s possible that it’s more to do with time than the tax break. It was likely to happen anyway.
On the other hand, billionaire wealth isn’t just invested moneys, it’s usually corporate fuckery.
That said, let’s ACTUALLY tax the fuck out of it and put it to good use.
Extend your reasoning. Why are the older people still there blocking the way? Because they’ve been unable to retire for a miriad of reasons orchestrated by those in power.