|Pyro as Bill said:
Nobody really cared about their TVs or VCRs.
They were the guys who made the Walkman. They were the Apple of their day with the demographic that mattered.
Music players are definitely what built the company. But by the time Playstation launched, all of their electronics were known as being top notch. Today, it is kind of a disadvantage outside of video games, because they usually have some of the most expensive electronics too. That doesn't change the fact that Sony is seen as a premium brand though.