The way you phrased the question is a bit broad. You've included different types of expenditures there. I think you really have to look at the nature of the expenditure or the spending.
When you look at tax measures, for instance, a number of measures are just there to properly measure the amount of income subject to tax. It's what we call the “benchmark tax system”. Typically, a business is allowed to claim deductions for normal expenses, whether they're wages or depreciation of capital.
There are what we call “tax expenditure” provisions, which are really departures from the benchmark, and we tend to look at these differently because they are a departure from the benchmark. You mentioned flow-through shares, for instance. That is a departure. In this context, they would typically be seen more as a kind of subsidy or special assistance, if you will.
Just to go a bit beyond that on the flow-through shares, for instance, in the last budget we did announce the phase-out of the flow-through share for oil and gas and coal exploration.