PSN for starters.

And Crackle.

I was thinking the same thing. While I don't believe it is well known, Crackle is available to most platforms.

If they released it today on that platform, it would be well known in a matter of hours.

Agreed; an official announcement from Sony to the major news outlets that it would be released on Crackle and nearly as many people would have that installed as iTunes :)

I don't know much about PSN but is it restricted to Playstation owners?

PSN is just the Playstation-targeted wing of their Sony Entertainment Network, which is cross platform: https://en.wikipedia.org/wiki/Sony_Entertainment_Network

They have the means and the platform. Blaming it on others when they have their own internal platforms is blatant blame-shifting and nothing more.