Apologies but I fail to understand the argument you are trying to make. It seems to be something like 'There are and were multiple mobile OS's, but only one internet and WWW, and somehow that is important enough to prove public sector projects are always bad and the WWW is an exception.' Actually if you go back far enough there were multiple networks that people used to gain information for computers. In the old days there were dial-up sites using private infrastructure and owned entirely by the private sector. Those old enough to remember will probably think of AOL dial-up service and old style dial-up bulletin boards. Yet the internet didn't take off until government funded projects supported it, including ARPANET (a precursor of the internet for the Department of Defence), the invention of HTML (developed by a researcher at publicly funded CERN), and NCSA Mosaic (the first popular web browser, a result of state and federal funding). Public sector innovations permeate the technology you are using now (and of course private sector technology as well).
My point is that it is political dogma on one side of the political spectrum is to think of all government projects as wasteful and doomed to failure. That is simply untrue. And most private sector efforts fail. To assume this new project by India will fail is based on a kind of prejudice against the public sector and, possibly, against the country. India's mobile OS might fail. It might not.