I agree that not every good act or charity can be profitable. I guess my take on it is that _if_, all else being equal, we can make charitable acts profitable,

I agree that not every good act or charity can be profitable. I guess my take on it is that _if_, all else being equal, we can make charitable acts profitable, we should do that, because that's a more reliable incentive than relying on people to do the good and right thing, unfortunately. In practice, "all else being equal" is often a very strong constraint!