In the history of data, reuse is a constant. In human history, regime change is a constant.
Hence the extractive repurposing going on at #stackoverflow, #github & #reddit to feed AI and take over your jobs. (And countless injustices, like DACA used for ICE, Nazis using invaded country birth records to find Jews, etc).
This is the true “tragedy of the commons”: upon hostile acquisition, what was once a gift indicating membership, care, and community is liable to unethical extraction.