Minecraft Super Duper Graphics Pack Is cancelled + Orcs Must Die Unchained server shut down.
I doubt if they are able to make AoE4.
Super Duper Graphics Pack was announced during E3 2017 for Minecraft, now its cancelled.
Also their free2play game Orcs Must Die! Unchained did shut down recently their servers. The official statement about it isnt even longer available. https://venturebeat.com/2019/01/07/robot-closes-orcs-must-die/
“Orcs Must Die: Unchained and Hero Academy 2 have been unable to maintain a sufficient player base to cover the operational costs to keep the games running,” Hudson wrote.
Put simply: If you don’t have enough people, they won’t spend enough money, and the games can’t pay for themselves let alone generate a profit.
Is Microsoft too bad at supporting games? Sure they are. There have been tons of games software project with too obvious design flaws.