Even a private company has to buy the land for the right of way, and what do they do if one crucial property owner doesn't want to sell? If it's a government project, they can force a sale through the use of eminent domain, but I am led to believe that the current population of rural and exurban Texan quasi-libertarian rugged individualist pseudo-cowboys looks at the concept of eminent domain on principle with a certain amount of hostility. Then there's the reasonable opposition to a government expropriation on the basis of the property owner thinking that the price being offered for is property is unreasonably low. Frankly, based on the opposition to the "NAFTA" highway I heard about some years ago, I'm surprised that they were even able to build interstate highways in Texas, but they have, in fact built some new toll roads (like TX130 to bypass Austin). Add that to the fact that many of these people now view passenger rail as a partisan cause of effete quiche-eating bicoastal elites, and much of the opposition to passenger rail in Texas is explained. (Of course, there's a lot of Texans who do use the passenger rail available, as I saw from riding the Texas Eagle, and, at least in the Dallas-Fort Worth area, they're willing to pay for extensive rail transport, but in between, there's a lot of opposition.)