With PlayStation network, Sony goes back to the future in search of revival

Not quite true - OnLive's been offering streaming / cloud-based gaming since 2010 on their MicroConsole adapter. I'm sure there's others that's been in the market for a while too.

But OnLive is not a console game maker, which is the qualifier that was stated in the article. So the article IS quite true (at least with regards to OnLive).

Sony plans to reposition the video console warhorse as a hub for a network of streamed services,

Wasn't this their plan from like 10 years ago?

It begins. The move away from gamers. This was what the Xbox One trying to do.