That's a false dichotomy. Redistributing =/= squandering.
Unless you mean the squandered billions was through literal setting piles of money ablaze or losing it all in a poker game to bigger billionaires, it seems if redistribution was the goal then squandering should be encouraged.
Squander means to spend thoughtlessly or foolishly or wastefully. It's not a synonym of "spend".
Taxing inherited wealth, and using the revenue to support infrastructure, education and research, is investing in many people's success.