What about the cost of a tail strike?
What about it?
A relatively rare event that happens to captains as often as anyone else when it does occur. An insured risk. Rotation rates and pitch levels monitored at all times and checked by the captain/training captain.
Clearly the risk likelyhood is deemed by the insurance companies to be exceptional or unusual in this respect, even though there may from time to time be isolated occurances. If it were otherwise, you can be sure they would price it in.
In summary, irrelevant to the cost effectiveness.