Honestly it's probably an upgrade for O365 but people won't want to hear that. It's cloud based shit being integrated with a cloud based graphics cards being able to search and assist with that functionality. If we don't want our shit on a cloud, we shouldn't use O365. Copilot isn't changing much. Their software took its course, just move to libre office and if there is a big enough market, someone will fill the gap if they don't have the features they need from libre, but I don't know of any I need.
*This is mostly pointed at enterprise