They acquired Arroyo [1], which K2 is based on, shortly after your first commit....

abound 23 days ago | parent | context | favorite | on: Cloudflare K2: serverless event streams

They acquired Arroyo [1], which K2 is based on, shortly after your first commit. Since acquisitions are not instant, it's likely they had been thinking about this before and you both converged on the same idea.

[1] https://www.arroyo.dev/blog/arroyo-is-joining-cloudflare/