A friend has said that there is a word meaning the outcome is something very different from that originally envisaged. For example:
The Australian government introduced a "First time home owner" bonus. Where if you were buying your first house you would get a lump sum cash. Of course everyone selling a house in that price backet put the price up by the same amount as the lump sum and first time buyers didn't benefit at all.
Does anyone know if there is a word meaning this and what it is?