That's simply not true. People are compensated generously for land that is seized. I have friends that have had it happen, and you get a lot more money than if you were to sell the property - so it's a bit like winning the lottery. The amount of room for appeal is dictated by the nature of the seizure and the government "level". (ie if it's a national interest project you have little recourse, but if it's the city government then it's likely different)