I do not CARE whether the "people of Nebraska" see 'economic benefit.' What I'm discussing is property rights and whether the government should have the power to seize YOUR farm and transfer it to GE if, for example, enough of your neighbors think doing so would benefit them. I don't know why you're deliberately missing the point.
Buffett's not the issue, but nice try.
And you mentioned railroads. Sure, eminent domain is used all the time for such projects, roads, bridges, power lines. In fact my grandfather's old rural 10 acre home place had a major power line built right through the middle of it - ruined it for purposes of anyone putting another home there. A nice man met with my mother, said here's the check, we asked what our options were, he said "None - you can sue but you'll lose."
But the public benefit or use of a railroad or road or bridge or that power line is obvious and uncontroversial. Other than some lease payments, I'm not seeing the public benefit to Nebraska from a pipeline transporting Canadian oil to Texas refineries.