I made a video to help Unity devs quickly navigate things before they make decisions. Watch is not necessary I copy paste my video description below with all the links I shown in video. If you like to hear my thoughts or opinion then watch I don't mind, I don't use youtube video to make a living.
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This is not tutorial video, also not video to tell you to use UE. It is a video that tell you the information you might need to start and make a decision for yourself. There are plenty of other better tutorial content creator than me, feel free to search for those.
TL;DW: Just click through the links if you don't want to spend 30+ mins hearing me talking about it.
1:06 Migration Doc: https://docs.unrealengine.com/5.0/en-US/unreal-engine-for-unity-developers/
2:18 License Portal: https://www.unrealengine.com/en-US/license
Standard License: https://www.unrealengine.com/en-US/eula/unreal
EULA Change Log: https://www.unrealengine.com/en-US/eula-change-log/unreal
8:16 UE Features: https://www.unrealengine.com/en-US/features
9:46 Setup Visual Studios: https://docs.unrealengine.com/5.3/en-US/setting-up-visual-studio-development-environment-for-cplusplus-projects-in-unreal-engine/
10:46 D3D Crash: https://docs.unrealengine.com/5.0/en-US/how-to-fix-a-gpu-driver-crash-when-using-unreal-engine/
14:04 Good Sample Projects to start
17:42 Show Lyra, talk about Blueprint, C++, making your thing in plugins
20:35 Convert Blueprint Project to C++ project.
21:15 Create your own plugins
24:24 Deal with Experimental, Beta features
27:07 Market Place free content and restriction
29:00 UEFN: https://dev.epicgames.com/community/fortnite/getting-started/uefn
30:28 Show UEFN, example island UEFN Doc: https://dev.epicgames.com/documentation/en-us/uefn/starting-out-in-unreal-editor-for-fortnite
32:41 Verse Doc: https://dev.epicgames.com/documentation/en-us/uefn/learn-programming-with-verse-in-unreal-editor-for-fortnite
34:27 Creator Economy 2.0: https://create.fortnite.com/news/introducing-the-creator-economy-2-0?team=personal
A lot of non profits like this do have lawyers on staff, or at least on retainer. Ao3, which hosts fanfiction, has a small army to deal with issues
Also currently in the US you cannot copywrite bits of code, so copy pasting lined off stack overflow is not a legal issue
Also you and I both know the big Corp will try and blame anyone else for the issue and try their best to make it the devs problem anyway, at least with godot you can maybe get some community support or media pressure behind you
I am not sure if you understand the difference between sharing the code(UE allows you to share code snippet for discussion etc under 30 lines) for discussion etc, compare to paste into your code base and claim it's your creation. Epic sure was not shy away from suing in the past. And there are other examples, ie. Betheda(ZeniMax) sues Oculus that results in settlements. All from codes/tech implemented.
Community support or media pressure means very little when you are served with legal notice, as much as I despise the world's current legal/patent/copyright system works, that's currently the rules everyone follows.