Orphan Wilde lays out where it's gone adrift:
Because it considers taxation as an investment with guaranteed returns, or indeed non-negative returns.There's much, much more, and it's entirely damning. It's actually a pretty good summary of why I haven't considered myself a leftie since about 1985 or so.
Because it holds employing people digging out holes and filling them in again - or just paying people to stand around doing nothing, or even paying five people to do what one person and a machine could do, or employing people to replace perfectly good infrastructure long before it needs replacing - creates demand and thus expands the economy.
Because it says rich people just get richer through economic osmosis, contributing nothing and spending nothing, just absorbing everything.