Its amazing what they have achieved and even with akamai handling most of the streaming infra, hotstar still have to serve for 45M users for homepage, streamlinks etc which is a feat in itself.
That being said, the solutions they proposed are fairly traditional and its more about throwing more compute to your servers and dbs.
Netflix does crazy shit when it comes to streaming like breaking a deal with isps to cache and serve and much more.
Between the two, Netflix while building Netflix ended up creating new open source tools (amazing devops open source) and new terms like chaos engineering.