But with restrictions finally tightening on the Kremlin’s chief moneymaker -- oil -- the months ahead will be an even tougher test of President Vladimir Putin’s fortress economy.

Source: https://www.euronews.com/2023/03/13/ukraine-war-wagner-recruiting-in-moscow-high-schools-for-young-warriors

For more than a century, Wall Street has been a proven moneymaker that's outpaced the likes of commodities, housing, and bonds on an annualized return basis.

Source: https://www.fool.com/investing/2023/11/05/money-supply-great-depression-big-move-in-stocks/?source=eptyholnk0000202&utm_source=yahoo-host&utm_medium=feed&utm_campaign=article&yptr=yahoo

Still, WWE is a proven moneymaker, and with live television, which is truly scarce these days.

Source: https://deadspin.com/nhl-you-can-play-ivan-provorov-flyers-wwe-vince-mcmahon-1850010765

"The mill has never been a great moneymaker," a U.S. Steel spokesman told the paper.

Source: https://m.startribune.com/duluth-economy-history-us-steel-morgan-park/600328509/