On Disneyplus Official Instagram the site announced "Friendcation: In the Soop" would be available in the USA beginning October 19. https://www.instagram.com/p/CjDUhezs3QJ/
Hopefully you live in a country that wills till show it if you get Disney+ Here in the US the only Korean Drama…
That's true about the deal between KOCOWA and Viki from 2017 forward. However, in 2022 some of the major networks series were licensed elsewhere and neither KOCOWA nor Viki could license them. Disney+ got these. Also some cable network shows I didn't include. "Bloody Heart" , "Crazy Love" (KBS), "Doctor Lawyer", "Golden Spoon" (MBC), "Thousand Won Lawyer" (SBS).
The only reason I can think of about Disney+ not being global is that they are 'testing the waters'. Also, Disney (like some of Netflix series) is working directly with production companies and bypassing broadcasters (KBS, MBC, SBS, and the cable networks). Two upcoming shows "Casino" (Arc Media production company, etc) and "Connect" (Studio Dragon production company) are examples. https://en.wikipedia.org/wiki/Casino_(South_Korean_TV_series) https://en.wikipedia.org/wiki/Connect_(TV_series)
All that to say, it's getting more expensive to watch Korean dramas.
Hopefully you live in a country that wills till show it if you get Disney+ Here in the US the only Korean Drama…
That's a matter of opinion and it depends on what is available in your region. Some legal sites are VIU, KOCOWA, iQIYI, WeTV, OnDemand Korea as well as Disney+ and Hulu. There may be more legal sites that I am unaware of. Also, Amazon's Prime Video has a selection of Asian dramas too.
K-Drama 
1 
1 
https://www.viki.com/tv/38873c-smile-to-life#about
https://www.viki.com/tv/38876c-bad-prosecutor#about
https://www.instagram.com/p/CjDUhezs3QJ/
https://www.viki.com/tv/38875c-my-deepest-dream#about
https://www.viki.com/tv/38872c-the-love-in-your-eyes#about
https://www.viki.com/tv/38872c-the-love-in-your-eyes#about
https://www.viki.com/tv/38871c-cheer-up
However, in 2022 some of the major networks series were licensed elsewhere and neither KOCOWA nor Viki could license them.
Disney+ got these. Also some cable network shows I didn't include.
"Bloody Heart" , "Crazy Love" (KBS),
"Doctor Lawyer", "Golden Spoon" (MBC),
"Thousand Won Lawyer" (SBS).
The only reason I can think of about Disney+ not being global is that they are 'testing the waters'.
Also, Disney (like some of Netflix series) is working directly with production companies and bypassing broadcasters (KBS, MBC, SBS, and the cable networks).
Two upcoming shows "Casino" (Arc Media production company, etc) and "Connect" (Studio Dragon production company) are examples.
https://en.wikipedia.org/wiki/Casino_(South_Korean_TV_series)
https://en.wikipedia.org/wiki/Connect_(TV_series)
All that to say, it's getting more expensive to watch Korean dramas.
Some legal sites are VIU, KOCOWA, iQIYI, WeTV, OnDemand Korea as well as Disney+ and Hulu.
There may be more legal sites that I am unaware of.
Also, Amazon's Prime Video has a selection of Asian dramas too.
https://www.soompi.com/article/1546537wpp/bibi-confirmed-to-join-song-joong-ki-in-upcoming-noir-film
"Big Mouth" available on Hulu (USA).
https://www.viki.com/tv/38859c-my-calorie-boy#about