Can you share more about your time at the Canadian one? I feel like there was a big hullabaloo about it years ago, but it's not really clear what they do.
Not sure what hullabaloo -- they do provide a bunch of services to Canadian institutions (including Libraries and Archives Canada) and they perform physical services like book scanning and in the last few years I believe they are the parent organization for the physical Canadian datacentre _somewhere in BC_.
For my work, I worked in their Archiving & Data Services department, on https://archive-it.org/ -- I didn't know this before I joined, but Internet Archive offers various for-pay services to other cultural institutions, mostly around archiving their stuff or white-labelling playback of archives.
On one hand this is neat, as IA have expertise around this, but on the other hand (as a Canadian) I don't like that it's not actually sovereign and that it looks like it's run by our government but that it's not. Tradeoffs, I guess.