Not sure how LOTRO servers are configured or deployed, but most services of this scale will use geo-redundancy and deploy across multiple data centers (multiple cities). It's been this way for decades.

I'm IT as well. I'm not so sure that they have strong HA in place; I've been hearing of Boston, and only Boston, as the site for the DC. Obviously failover sites won't be made public, but given that we still hear this to this day, and have such frequent outages with what appears to be a long RTO, I have to wonder if they have avoided distributing their computing in any meaningful way... especially given the frequency of issues. If they were running any of this in AWS the fault tolerance would be higher.

I bet (just an opinion) that some exec made a business decision and said "the game is old, just keep running it on the existing physical hardware."