Is the Open Source Bubble about to Burst?

A thoughtful exploration of the challenges the term “Open Source” has at this point in the light of heavy reliance on proprietary data

A system that can only be built on proprietary data can only be proprietary. It doesn’t get simpler than this self-evident axiom…It erodes the fundamental values of what makes open source what it is to users, the freedom to study, modify, run and distribute software as they see fit.