I've been of the impression for a while that government waste and corruption grows without bound until it destroys the host, resulting in a revolution or some other kind of "reboot," and then repeat. There appears to be no way of actually cutting it without setting fire to the entire thing. Few things in nature are as tenacious as a parasite.
So that makes intuitive sense, but a lot of things in economics (and everything else complex) make intuitive sense but turn out to be completely wrong. The problem is that while we both "suspect" that this is true or close to true, all that really means is that our gut says it must be and we're smart enough to know about a mechanism like inflection points that can be used to rationalize it.
Wasted production -- on stuff no one wants (like wartime destruction), is a problem.
Opportunity cost is wasted production (paying people to lay bricks instead of building efficient brick-building machines, say), and that's the motivation for "free market instead of central planning", but that's what austerity means. Austerity means cutting government spending to raise the government's bottom line -- but the government's bottom line isn't like yours. If the country owes its own citizens money, it won't go bankrupt -- that's just taxation under a different name
I was suggesting that there are certain government programs that incur a cost to operate incur a greater cost to cease operating. They generate a net positive on the money spent. Cutting them for "austerity" is foolish.
Laffer curve may point us towards the general direction, but real world observation have showed that there is no simple, smooth curve that predicts tax income versus tax rate - human behaviour is far to much stochastic for that.
On a personal level, you might stop paying for your cable TV when money gets tight and have it make you better off. Not paying for your car and finding yourself unable to get to work would make you worse off despite the "savings".
The trouble with politics and austerity is they always seem to end up missing the car payments and keeping the cable on.