> i'm sure they will come to be used across lots of areas of the web and not just blockchain

Totally agree with this. After working closely with zk I noticed that it boosts your thinking about decentralized protocols in the same way as knowing about signatures or hashes.

Right now infrastructure for doing zk is in “alpha” stage and different proving systems and optimizations are fairly new and not widely used. I believe it will grow bigger It’s very exciting field.

(I worked on zk rollup called zksync but zk rollups are only one of the use cases for zk proofs)