For use as a file format, where one priority is to compress columnar data as well as possible, the practical difference between Arrow (via Feather?), Parquet, a

For use as a file format, where one priority is to compress columnar data as well as possible, the practical difference between Arrow (via Feather?), Parquet, and ORC is still somewhat vague to me. During my last investigation, I got the impression that Arrow worked great as a standard, interoperable, in-memory columnar format, but didn't compress nearly as well as ORC or Parquet due to lack of RLE and other compression schemes (other than dictionary). Is this still the case? Is there a world where Arrow completely supplants Parquet and/or ORC? EDIT: Just found https://wesmckinney.com/blog/arrow-columnar-abadi https://wesmckinney.com/blog/arrow-columnar-abadi, which helps answer this question.