You were probably thinking it, but you didn't explicitly mention the No. 1 cost - raising the cattle. An animal that large is probably both delicate and expensive as it grows to maturity.

Could conceivably cut out all the work of growing bones, feeding/watering, animal healthcare, breeding & transport with labgrown meat. And the fixed cost of maintaining farmland. The cost saving potential is huge.

Not even considering the benefits of being able to quickly adjust production to what can be sold, as opposed to waiting however long it takes for a calf to grow up.