If you've been around wetlands in the Midwest, switchgrass is the most prolific plant. You have to fight it to plant anything. The cultivar is a few percentage points better, but don't mistake it being better for anything other than marketing for the seed company.
You can't have something that just grows free and wild and is easy to propogate and to harvest with old square balers. You can't make biomass digestors palletized for home or community use to reduce our reliance on propane. No, you gotta make money from investor based corporate ag on a slightly different angle, mostly to grift clueless government green energy mandates.
I don't believe for a second modern agriculture companies give a fuck about the poor.