It certainly seems unlikely. Maybe it's the current operational cost, not subtracted the new operational cost. Maybe it's due to already adopting cloud and thus having paying double. Maybe it's due to the use of mainframes, rather than conventional servers.
Either way, it's definitely not the cost difference between on-premise and cloud. Cloud providers are not charities, and their buildings and staff are not cheaper than yours.
I run a PiHole and a Tailscale exit node on my Unifi routers (previous generation). The Tailscale exit node lets me do both site-to-site VPNs and site-specific egress. The one thing keeping me from site network nirvana is that I haven't quite figured out how to set up a wifi network on the Ubiquiti device that routes all traffic through a given other exit node, however. Someday!
I tend to come to the same conclusion. we communicate in characters forming words or sentences, symbols, and whitespace. As you indicate, text can be imprecise, but a good author knows how to phrase a sentence such that its meaning is better understood by a reader through varying techniques
I used to use them. Then I was burned by some Very Opinionated managers and coworkers who didn't like seeing new things. It wasn't a hill I was willing to die on; there's more important things to argue about in C++.
Either way, it's definitely not the cost difference between on-premise and cloud. Cloud providers are not charities, and their buildings and staff are not cheaper than yours.