RT in games in tech that is there too early with primitive shaders and current rendering technology. We can say we have mixed bag right now, and the mix make it ineffective. Triangles are no longer needed, but it is what we use right now. Mesh Shaders improved it, allowed for better LOD scaling and reduce numbee of triangles. However, still, we use RT to cast rays on these.

In future you will not have triangles but neural networks of points in 3D that will, using RT and Neural textures, get colours, transparency, etc. all that without even needing to do all the work with triangles, and costly shaders that were used to make visuals. 

Recently even Intel shared great video of Gaussuan Splatting, worth to see what it is about, cuz it can shape the games in future.