In your case it's only viable because you can use it domestically with very little processing (or processing done with free labor). I suspect doing it on an industrial scale will quickly see costs rise for transportation and processing. A sibling comment says that corn fertilization costs $120/acre. Even at double the cost, I doubt the whole pipeline of collection to industrial composting, can be anywhere competitive.
The truth likely falls the other way. Low grade compost is taxpayer subsidized in the us as it's mass yard and other nature waste. In cities with decent food waste programs the quality increases
And if you're a farm manager, the "chafe" and waste are "free", have no transportation costs, etc. In some jurisdictions the "chafe" has already printed money via crop rotation / wild grass subsides.
