It's worth noting that the relevant timeframe to implement PQC isn't just when quantum computers become sufficiently fast to break current crypto (assuming the answer isn't never). It can take a decade or longer to re-encrypt data and/or to update cryptographic infrastructure.
Given that (varied) expert option on quantum computing being able to break current public key cryptography seems to mostly fall in the 10-20 year range, there is some, at least mild, urgency to start using PQC for the most sensitive data relatively soon.
Given that (varied) expert option on quantum computing being able to break current public key cryptography seems to mostly fall in the 10-20 year range, there is some, at least mild, urgency to start using PQC for the most sensitive data relatively soon.