The modules you speak of exist, they're ICs. Most electronics now are just ICs and traces on a board. The real challenge is the IC tool chain is very complex and very not open.
It would do no good to have open source modules that are just traces and then a bunch of closed source ICs. This is what Sparkfun, adafruit, etc. do. It's great for engineers and hobbiests but it doesn't get to the root of the value you propose.
The real value is in the ICs, those are the magic modules you speak of that need to be open source.
Getting that to happen is a whole thing. Like getting ExxonMobil to share their oil rig designs.