[1]https://en.m.wikipedia.org/wiki/List_of_Unreal_Engine_games
http://www.vgchartz.com/platform/68/xbox-one/
You have to go down to #31 to find an Unreal Engine game (Batman: Arkham Knight). The only licensed engine game that I know of in the top 30 is Titanfall, which licensed the Source engine from Valve. The situation is similar for the PS4.
By and large, the developers of AAA games don't license an engine from a third party.
[0] https://www.zenimax.com/studios
[1] http://www.gamasutra.com/view/news/29886/id_Tech_5_Rage_Engi...
I'll give you that Unreal and CryEngine are similar enough to make that comment, but there's plenty of space for innovation within engines. Amazon seems to be trying their hand at it with twitch integration for example.
In general, game development is filled with archaic processes, boilerplate, inefficient workflows etc. Unity3d was the jQuery of game development in that regard, and we're nowhere near peak.