Uninformed guess: Maybe it relates to their other success at maintaining and re-releasing their well-known and well-loved games? e.g. it's apparently been wort

Uninformed guess: Maybe it relates to their other success at maintaining and re-releasing their well-known and well-loved games? e.g. it's apparently been worth it for them to re-release Age of Empires II (as an HD edition in 2013), then Halo Master Chief Collection (2014). AoE is re-releasing again with a "Definitive Edition", and Halo MCC will be releasing to PC soon.