Cranes are apparently something of a last resort nowadays. I read an article about the subject a while ago that said the typical railway breakdown crane of the past wasn't worth having nowadays, because derailments are so few and far between, and the vast majority are now re-railed by jacking.
Back when there were loads of cranes all over the network they were collectively dealing with thousands of incidents per year...
The few big cranes around are completely booked up on specific infrastructure tasks.
There is a Kirow 800 just meters away in this case but an easy jacking job which is safer and less risky.