> Sometimes organizations improve because they want to

or that there's an alternative reason for their action other than maximal profit.

There's darwinian natural selection at work in the private sector (where reproduction can be taken to mean profit). Such a force doesn't exist in gov't funded entities providing a service. That doesn't mean there's no force to make those services improve - it's just not the darwinian natural selection force (may be a politician decides to make it his/her objective to improve XYZ as a promise for votes).