I watch anime in Netflix Japan. I can confirm that there are many new anime without any sub/dub except Japanese, maybe because those anime won't get enough enjoyable foreign watchers (except weebs).
As someone that follows seasonal anime, I'm surprised how little isn't subbed. I haven't found a single thing yet which didn't have subs. Every popular show is subbed by crunchyroll/funimation, and less popular things (like Godzilla S.P. in the last season, stuck in Netflix jail) had fansubs.