Sadly, we don't seem to be far behind in that regard. Practically the whole world's economies are heading for a major collapse, if the idiots in charge aren't replaced by people who actually know what they're doing.
You mistake purposeful, 'managed decline' policies for stupidity.
Think disguised hospice care for nation-states, where those on top get out with their golden parachutes or the problem out lives them by making the plebs accept shittier and shittier conditions indefinitely.
The Left understand the destruction they reap, and most of it is on purpose, in service of the utopia they believe they can achieve, if they can manage and survive the collapse of the current nation that calls itself the US.
Stopping the decline...that's more than just an economic or social issue. It's figuring out how to handle shit like AI, mass digital banking, declining populations, abusive politico-corpo culture in DC, and crumbling infrastructure almost everywhere.
Sometimes a peon missteps, or things like Musk taking over Twitter, can cause unplanned events that upset the schemes of those managing the decline. But betting the future on black swan events is a very, very risky gamble.