Yes I would agree with that, but that doesn't mean we should stop trying. As an example, the NZ government is currently funding grants to reduce carbon emissions in livestock by 10%, which is an easily achievable target with current technology but the knowledge of how to do it isn't widespread.
A lot of this progress is unfortunately going to fall to governments and grants like this, which is probably where any carbon mitigation company needs to concentrate rather than venture capital. Once the claims about cost reduction can be proved, agriculture will follow soon enough.
Other industries will have similar grant schemes.
