Well supply economics isn’t working either. Reflecting back on all that economic theory and explanatory and predictive modeling in business school there was never any contemplation that pure capitalist economics was anything but the ideal or could in any way be a flawed pursuit.
Capitalist economics does not work in certain markets (e.g. health care, insurance) unless you do not have any problem with poor people dying, suffering, going without, being discriminated against etc. because they could not buy enough product. The idea that the board of directors of a corporation elected by the shareholders will act in good faith in the best interest of the corp. to maximize profits for shareholders is flawed. Everyone acts in their own self-interest and models should factor the worst possible deceit and malfeasance in human behaviour. Boards once elected, just like any elected government have a short term dictatorship to exploit and will inevitably devout their energies and resources to preserving their position and power.
(Holy crap did I just write that? Twenty-year-old-me is staring in disbelief.)