Can’t you say the same thing for EC2 but with Linux instead of Presto? Personally I like Athena. The fact that it’s in the Amazon platform and managed is a plus for me.
EC2 involved substantial VM management and networking innovations that I respect. Ditto lambda and S3. I would not categorize any of these as OSS flips in nearly the way that I would categorize Athena as an OSS flip.