While this is pretty cool, I have a couple reservations. How do you scale this up so that it can make a measurable impact? What incentive is there for ranchers

While this is pretty cool, I have a couple reservations. How do you scale this up so that it can make a measurable impact? What incentive is there for ranchers to get the seaweed for their cattle? I imagine that getting the feed or the seaweed itself would result in more overhead costs. Is there a subsidy for lowering emissions that would make getting this worthwhile? Also I can't help but wonder how the seaweed affects the microbiome of the cows in the long term. It does kill the microbes that make methane. IIRC, microbes are pretty much essential for cow digestion. Are the microbes that this seaweed kills essential for digestion or some other purpose?