Earlier quoted context omitted.
S3 is a transparent network filesystem. Unix is only the paradigm for computing servers. Which makes sense because different apps have wildly different ways of scaling. There's no effective paradigm for abstracting away 1,000's of CPUs in a general purpose way. I really don't have any idea what you're looking for here, that is possible, that cloud services don't already do.
S3, yes a network accessible FS. Unix - only is a telling word - it is the /defining/ paradigm for that. Is there a better one yet? 1000 CPUs? I mean, uh Hadoop, spark, etc etc. What?
Don’t be ridiculous. We had networked distributed file systems over both the arpanet and lans before Unix even had networking. I even mentioned this in my root comment.