How is that related to what is happening here? To fine a company for not getting that a company can't provide data it does not have is incompetence, not an act of sovereignty.
+ they failed to even reply.
I hope they go much further if they continue to not obey other countries' laws.
Facebook and whatsapp is used by basically everyone who has internet access [1][2]
Edit: Of course number of users does not imply in revenue, but the Facebook office in Brazil is also a gateway to other Latin American countries. So I would argue that the country might not be as unimportant as you seem to imply.
[1]http://www.statista.com/statistics/268136/top-15-countries-b...
[2]http://www.telegraph.co.uk/technology/2016/05/03/whatsapp-sh...