This type of a call would likely be focused on assessing current state at that point.
I work for a large non-US based tech company and have not heard anything about this beyond HN.
Edit: upon checking, we're safe, it doesn't impact log4j1, only the second version. We're not cowboys using versions as young as 2012 lol.
Friday mid-afternoon a Google search for the exploit showed there were many websites in several languages giving instruction on how to exploit the vulnerability. This is hitting hard and fast.
If the stakeholders participating in the call on Monday are not the people working on patching, managing, or prioritizing, then having the call earlier than that is pointless, because those stakeholders are too removed from the situation, and getting that information will detract from getting work done.
It's pretty simple really, having a status or coordination call while the work is being done is roughly analogous to a photo-op by a politician during an emergency. It looks good for the voters, but it takes away resources from the folks who are actually doing the work.