The underlying problem is that the economy is breaking basic macroeconomic equations, namely that savings must be invested. A wealth tax would force such an outcome. This is unpopular for republicans. Government investment would force such an outcome. It's still unpopular for republicans. Building more houses would force such an outcome, it's unpopular for democrats. Deeply negative interest rates for consumers would force such an outcome except that cannot happen because people will just hoard cash.

I can list more and more things. The pattern is clear, all the options are disappearing and we are left with nothing to do. The reason why economics doesn't work isn't that the textbook is wrong, it's that people come up with more and more sophisticated ways to prevent the textbook rules from functioning.