If you need to get permission of thousands of people, and any single one can hold up the entire endeavor, then the economically rational thing to do is to be the last holdout, as you will get paid a lot more. Everybody loses in that scenario except the holdout.
A plain old suit with many enumerated defendants would work for this topic though, assuming there was a cause of action.
It's often much easier for the power companies to just negotiate with the city/state to use the already existing road right of ways, even if that's longer.
Land owners do need compensation, but we need to be careful to not let that compensation be any higher than it must be.
An advantage of increased awkwardness in dealing with local landowners would be that local organisations are incentivised to arrange a solution voluntarily, strengthening the local community, such as community owned and administered infrastructure that was constructed without government having to use eminent domain