My understanding is EBO is providing the effects to achieve your aim. What it does not mean is having the spare capacity for unexpected occurences.
In short....nothing in reserve. If the task requires a Company of men, that is what will be deployed. Actually, it wil be Coy(-) because a Coy ORBAT maintains a reserve force. It is a bit like ignoring flying to a MLA.
Bean counters involved in decisions they have no practical grasp of.