There is no diminishing the impact of Sony's entry into the videogame market in 1995 with the launch of the original PlayStation.
Now, imagine what the industry would look like without any of that. No PlayStation disrupting the market in 1995. Sony instead sits it out and concerned itself more on its audio and video technology, like televisions and portable music players. How would videogames look and play without Sony's pivotal entry in the market?
This is not just a speculation piece for amusement. Retrogamers that bemoan the so-called intrusion of Sony into videogames need to understand just what exactly Sony's entry has meant to not only the industry, but also to the very games you're playing right now.