They also want a smaller scope for the government. So it's not like saying 'I want to run this business but bring in less money', it's more like saying 'I want to run a smaller business, so what departments can we do without'. Smaller business may actually make more profit (read: be more efficient) than the larger one.
I try not to claim a political preference left or right[1], but to prevent confusion I do feel they're trying to make this 'business' much smaller than it needs to be.
[1] My political preference is merely that politicans are like diapers. They need to be changed regularly, and for the same reason.