Except that's not really their job except perhaps CSO and maybe CIO - and even those are generally strategic roles, with execution tasked to lower level personnel. Rest of the C's are focused on achieving the board's targets - particularly around things like
EBIDTA.
I'll leave it to you to research the tenure of the CSO & CIO
The comparative IT security spend across the three is completely relevant so as to see the differences. Was TMUS under-spending on IT security in some way and the additional spend caught them up? If not, then what specifically was that additional spend to accomplish?
Rhetorical question, I'm not particularly curious as to the answer. Just pointing out that you’re making unfounded assumptions