> I haven't seen much in the way of specific predictions from Stallman.

Try The Right to Read[1], which predicted ebooks, DRM, restrictions on reverse-engineering, electronic marketing profiles and hardware which refuses to run free operating systems — in 1997. When I first read it, I thought it was well-intentioned hysteria, but it was completely, 100% correct.

[1] https://www.gnu.org/philosophy/right-to-read.en.html