If the competition regulator for the Federated States of Micronesia had an issue with this acquisition and wanted to block it, would Meta abide by their ruling? If not, how big does a country have to be before their competition regulator is allowed to interfere in mergers between foreign-owned companies?
Also, if the US has a problem with a merger between two UK companies, do we in the UK have to abide by their ruling? What about if it is France rather than the US? What if it's Russia?