"rogue IT carries on as per usual"
IT Ops and Dev are 95% responsible for defining the software stack where I work.. but then as the senior IT bod, I really don't give a shit, as long as
1) It works
2) It is legal
3) Its secure
4) Its reliable
5) It addresses a need
Just recently a member of the team figured our CPUs were massively under-utilised and our Citrix boxes had excess GPU capacity. so we installed some bitcoin mining.
It works, its legal, its reliable, and its secured our summer junket whilst addressing our beer fund needs!