Why UE4 isn't using Enlighten?

All the interior scenes created with SVOTI are ARCHVIZ scenes, they don’t reflect the performance of a in game interior scene.
I rebuilded a whole interior scene from a current game in cryengine by my self, it looks amazing and i’m getting between 80 and 90 FPS out of my GTX 780 Ti.
After i finished the scene i will post a video on artstation so you can have a look at the quality and performnace of SVOTI.

SVOTI or SVOGI however the name is, it is a little bit unclear, mainly they call it SVOTI in the forums not SVOGI, however this is not really important at least for me.
The grass is greener for me with SVOTI cause it is actually usuable on PC and consoles, and games are developed with it. Can you tell this about VXGI ? VXGI looks amazing
but it is not game production reday, even not a bit.

Enlighten would be absolutly OK even with no source code access, fact is you can have it for UE4 for a ridicolus expensive price. And about the limitations, i guess almost every one can live with them.
I mean please don’t take this personal, no offense… but your talking about all the direct lighting systems, like they are worthless, limitations here… limitations there… bad performnace here and there… but what is the alternative ?
You are talking like we have alreday the best dynamic GI solution in UE4 and no other direct lighting system can compare to it??? Fact is we have nothing working in UE4 when it comes to direct lighting or dynamic GI, so almost every working and good looking solution should be thankfully accepted instead of just counting down all the negative points…