Does .net really has the future?

Hi All, I am working as a .net developer for more than 8 years(Not sure how its gone!!, feeling spent most of the life time into building products for others.). I often dream to become a software architect. I know its a very very touch path, But I wants to pursue :-). I see other technlogies are growing pretty faster than .Net? Ex. Node, React, MongoDb. So I am confused to stay in .net career path. Please suggest me the area I need to become a Web Application architect( who can build highly scalable and maintainable system)? Do I really need to learn Node? And React? And MongoDB? If Yes, Then since I am a .net Developer How I am going to use them in real apps?