I was thinking the same thing. But Facebook still needs to make things right with this company since the small company has the rights to the name. Unfortunately, for the small company, they have to fight a big monster. And they will, ultimately, unless they find someone to fund the litigation, have to settle for an amount close to the original offer from Facebook. Big companies with lots of lawyers win most of the time. It's how things go. :-(
There are multiple separate registrations of "Meta" and "metacompany" with the USPTO. There is the only one linked to Chicago[1] and if so they have less standing than the others because the name is "metacompany" (with no space). There are five other registrations for just "meta" (or "meta." with a period).