Assuming that cost saving will even be a concern for the new purchase. You can be pretty sure the contract of replacing it will go to a organization/corporate that is someone associated/relative to someone in the current government.
Anything is easy to do once, but maintaining that going forward is a business.
openwrt like thing for cameras - open source it and gchq / cia can keep it up to date (with their own backdoors)
I think a lot of camera-related stuff is under NDA.