Did you mean NetOps? DevOps refers to a development paradigm. If your development paradigm risks actual user-impacting down-time, you need firing ASAP.
Assuming you meant NetOps, can they live with provisioning me at least four (dev, test, UAT, and training) clones of the entire production environment? No? well then, they can make their case to the CTO whether inconveniencing them or our end users will have more of an impact on the bottom line. If the CTO says "go", hell, I'll code right in the production environment - Oh, you wanted that mortgage payment to go through this week? Bummer!
Developers should never have the power to affect end users. If they do, it represents a failure not on their part, but on the entire IT corporate food chain, all the way to the top. Choosing customer-facing downtime over a few more terabytes and VMs amounts to corporate suicide.