I kinda like this idea, but I think it only makes sense where the end product sold to the intended consumer is wholly integrated. So, this might make sense for

I kinda like this idea, but I think it only makes sense where the end product sold to the intended consumer is wholly integrated. So, this might make sense for a smartphone. Or perhaps custom systems in Google- or Amazon- scale datacenters, with a number of different custom types tuned to exactly the work each is intended to do, and packed as densely as the intersection between thermodynamics and economics will allow. But, I don't think we can escape the need for packages and PCBs entirely. At some point, you're going to need to interface with something that either A) you don't or can't control, or B) something at appropriate scale for interfacing with the humans whom the fancy system is ultimately supposed to serve. In either case, here come standard connections that are much bigger than the chiplet dies or the interconnect fabric between them, and thus, the need for PCBs to connect the Systems-on-a-wafer to the outside world. As such, I think it will be a while before I can pick components out on Mouser's website, and have all those component chiplets fused to an interconnect wafer and delivered to my home or employer's shipping dock (though that would be damned awesome).