40 years ago, the vast majority of people in the world did not have personal computers. The very first one was the Kenbak-1 in 1971 which was produced only for 2 years until '73 when the company went out of business. So clearly, having a WAN to connect home computers and businesses was not profitable.
Corporations exist to make a profit and they have no financial incentive to care about what people need unless they can make money doing it. That is why government funding is important, necessary, and quite frankly VITAL.
It is for example, technologically possible to create a wireless power grid. However, since anyone with the proper tools could use it free of charge it is not going to be built. The very first telecommunications satellites where launch with rockets designed and built by NASA, also a government agency. The fact that space is now being privatized doesn't imply that Space Technology could have, or would have come about entirely by means of the private sector.
Are you going to admit that you were talking out of your arse when making things up about the birth of the internet?
Look kid, the fact is the internet is the successor to the ARPANET(which was federally funded by the Department of Defense). I know how much you'd like to believe that this is made up but it ain't. Now in 1992, the internet was privatized and accessible to the general public.