I think they were not easily commercialized. I was a VFX software developer and internal tools are both very advanced and also fragile foot guns if you try to do anything that isn’t exactly down the golden path. VFX devs are not the usual product guys, they are usually either R&D/math guys or hackers, with little in between.

The way to commercialize WETA stuff would be to make new product teams and basically redo much of the work with professional software devs and figure out where the original VFX R&D had gaps - and it always has massive gaps.

Unity just went nuts with wacky acquisitions the last couple years and this was one of them.