The discussion between open-source and closed-source is essentially a discussion between communism and capitalism.

Anything that reaches a certain threshold of value to society and requires enormous effort to build and maintain has to fall back to a capitalist, for-profit, closed-source structure. That's all that's happening here.

Of course, small stuff like a software library that doesn't require much effort to build and doesn't provide much value can remain open-source. I personally think this obsession with open-source software is simply an obsession with communism and getting things for free, and not wanting getting rewarded for the value of the stuff you build, etc.