@haitchfive I disagree about a lack of progress in the affordability and accessibility of fabrication facilities: today it's possible to design your own chip using an open-source toolchain and process design kit and have it manufactured for under $10,000 via Efabless' chipIgnite:
https://efabless.com/products
If you want cheaper, you can use a multi-project chip approach like Tiny Tapeout and have your (small, admittedly) design produced for as little as $150:
https://tinytapeout.com/