1/60
No one is applying blame anywhere: these things happen, that's life.
Ajet was given clearance but didn't react; the controller issued a further instruction but the aircraft didn't roll until a conflict was inevitable if a climb straight ahead go around was initiated.
The controller then has the option to instruct Ajet to stop his TO roll: bad idea.
Or tell Cjet to turn right or left to avoid the confliction: good idea.
Problem is resolved and no animals are hurt in the process.