This was a idea and project that other than research benefits was doomed to failure.
most people DON'T upgrade their computers
even more people DON'T upgrade their laptops
almost NO ONE would upgrade or even want to upgrade their phone.
The "cost" of modularization exponentially increases with each step above. people don't want the extra cost on a computer or laptop, why a phone?
Most laptops aren't even modular now. Why? no one buys the modules outside of some niche areas.
On today's phones most people don't prioritize removable batteries or or expandable storage. yet people were going to switch out modules? ROFL