I respectfully disagree that ranchers are trying to use the government to destroy new technology. Rather, they're voicing valid concerns along the same lines of farmers 20 years ago who were concerned about Monsanto, and look where that's lead us.... Not toward a healthier future, and not towards larger profits for farmers.
If anything, the new technology would destroy ranchers, and while it may not be intentional, the government will lean in their favor if lab-produced meat is more profitable. This is assuming that we're all in understanding about government and FDA being in the business of profits - not health, morality, or the well-being of society.
I am not against new technology or anything that benefits humanity.. But if we ask ourselves why is this technology gaining traction while water/air/waste-fueled vehicles do not? Because of money, power, and influence. The ranchers have a right to be scared, the establishment will run them into the ground and in 15 years "real meat" will be seen as just as much of a "threat to public safety" as raw milk.
Maybe I'm paranoid but I could see this being an in way to declare that real meat is unsafe and un-hygenic, while only lab-grown meat is FDA approved to produce and sell. The only "Established interest" in this situation are those with the biggest ties to the investors and developers of this lab meat. If it's more profitable than ranching, it will destroy ranching regardless of whether it's healthy or not.