It's not just the farm lobby, it's baked deep into the constitution and the political geography so that vast empty land stretches have hugely disproportional political power.
How do you think energy policy is baked into the Constitution?
People vote, so how does land have political power? Presumably you mean people in low population density get disproportionate representation in USA?
The more acres you have, the more kWh you can generate each year
Why wouldn't land owners want to farm the sun?