The short and simple reason, more languages that people can enjoy there favorite shows in and expand the user base as it goes on. Also no get junk over by making it one platform. (You can read the whole thing if you like too.)

Sorry for any mistakes in advance. Disney one company that never got with the times. With launch of Disney plus I was very happy until they got me over. With making version same junk over again. Disney Plus Hotstar India, Disney Plus Japan, and Disney Plus Hotstar Indonesia. I feel bad they can experience Disney's other languages and how they mess with Europe and America. By not adding Asian languages other than Japanese. Seeing there competitors have most languages on one platform this also includes Asian languages. Apple tv, Amazon, and Netflix. knows all of it U.S citizens do not speak a European language. Same for Asia not everyone speaks a Asian language there. If Walt Disney was still a live he will be disappointed on how everyone changed. If he was a Live he would want us to listen to the world languages. I will not talk about the bad remakes. The point is region locking languages stinks at this point Disney needs to know not every one wants to watch it in same language. Living in U.S Alaska some people speak Tagalog as well and I want my family to remember the version I watched when growing up and teach them differences between the two languages. The world I will never see we did with video games now it is time to do it with Disney now. Goal get all of Disney's dubs on one platform.