The move to standardize the interposer was driven by DARPA to get Raytheon imaging chips working with Intel AI chips.
See slide 109: https://www.darpa.mil/attachments/ERI-DAProposersDay_Consoli...
See slide 109: https://www.darpa.mil/attachments/ERI-DAProposersDay_Consoli...
Well that's a terrifying thought...