Takkatan:
Well, I don't agree with the perception that there aren't many Japanese flms and drama's to watch. It all depends of where you live and which platforms do you use to watch your drama's/films.
I use Netflix and the Dutch version of it does offer me an abundant choice of Japanese films, J-drama's and even Anime to watch. Some J-drama's are really great!
There is some choice, yes but it's not as significant compared to Korean stuff and most of the Japanese stuff was offered on various other websites before (like Viki or DramaFever) and it's likely Netflix and Amazon scooped up the international streaming rights for cheap.
And like you say - a lot of it is anime which isn't my cup of tea.
I don't know how well The Naked Director is doing but that's the only recently created high profile Japanese show I can think of to come out on a streaming service with English subtitles.
ShotaSidePart:
Literally having this discussion in my kpop/ jpop culture class and Japan is really doing itself a disservice by being so stringent with their copyright laws. Yea you're making money but imagine how much more you could make with international fans. That whole aspect of it being "too Japanese" is just a cop-out.
I do feel like Japanese TV is too Japanese for me. Or at least the Japanese TV that gets subtitles is too Japanese. There are of course exceptions and I don't mind things in small doses but Japanese TV feels 'extra'. A lot of stuff that gets subtitled seems to be "based on this popular manga(? graphic novel)" and the characters seem more like caricatures than characters I would get invested in. I can definitely watch a movie because it's short enough but a TV show? Those are hit or miss because the first few episodes rarely get me invested in the characters and their stories.
I'm not saying you can't enjoy Japanese TV and people outside of Japan can't enjoy it... just that there's not enough interest or wider audience for it to gain wider traction to the point where we get 10-20 Japanese dramas brought into the streaming catalogue of Netflix US each year.
There is a reason Korean dramas are far and away the most popular. A reason Netflix has an entire production team and headquarters in Korea to sign Korean dramas and bring them international. Disney Plus is expanding to Korea in the next year or two and I would imagine given the "safe" and "family" nature of most Korean dramas they might try to sign or produce Korean dramas as well.
Outside of The Naked Director I can't really think of a major project from a non-Japanese streaming company despite many of them having a presence in Japan. There's just very little interest in bringing live action Japanese TV to an international audience and it's not all on Japan being inward looking and not caring about an international audience.