All that is beside the point. Chinese products are not essentials (there are alternatives), and by buying them India is financing Chinese government and military. Indians can survive without Chinese products and without Chinese companies.
Many of these products did not even exist a few decades ago, and we lived without them just fine. And there are alternatives to Chinese products and companies.
But it's still unbelivable that India is not willing to ban Chinese products and companies after the Chinese killing Indian soldiers in cold blood, invading large areas of Indian territory, and killing a hundred thousand Indians using a Chinese lab-manufactured virus. Such a thing would have been unthinkable a few decades ago.
The point is if we do not provide alternative there are lots of ifs and buts while not buying chinese Chinese products and items like phones have become essential in current days..Making devices are complicated at least without lots of IPRs. Indian business heads also lack imagination. Look at gaints like Infosys and Wipro. Once they were top of the game, now they are just cheap consultant(at the same time they are are destroying Indian pay standard in IT sector). Only aggressive marketing is Jio in recent times by an Indian company.Most of Indian startup are in services sector and with this attitude it is going to take decades make devices in India.
For instance Jio itself have all necessary stakeholders required to make a phone, but they don't seem to make any effort
In short, business elite is another babudom. Whole world wants to dominate indian market but Indian businessmen are playing some 11 D chess.
They are some other factors too like culture of considering jobs better than self-employment(colonies problem but its getting off fast)., low income making people insecure and some amazing socialist laws.
The crux is we are overly dependant on them.We use to think that we can leverage the 60+B of trade deficit but they want to exploit our over dependency.
Two basic things we can do is to develop defense manufacturing infrastructure and support manufacturing in unorganized sector(we don't actually see but they are worst hit by Chinese encroachment).