Very unfortunate… hopefully in the near-ish future this changes…
It does surprise me that theres trade secrets tho… what does surprise me is that there isn’t at least one open source option (even if it’s bad?) that could work.
Discussion
Unlikely it will for PDKs, as most people do not need them (only when you want to fab a chip) and too much competitive risk
PNR tools, no one cares
For logic synthesis, there is the bunch of loosely held together tools called Yosys, which unfortunately uses ABC for logic synthesis which is garbage
IP blocks cost $$$ to develop and could involve licensing patents