Back on June 15, 2015 -- during its E3 presser -- Microsoft announced that Xbox One was becoming backward compatible with Xbox 360 games. It was an announcement that proved to be one of the biggest of the entire show.

And while to this day not all Xbox 360 titles are available to play on Xbox One, many are, and at the very least the offering earns Microsoft some good-will among gamers.

Meanwhile, for Sony and PS4, no such offering has yet been implemented. If you want to play some of last generation's best games: your best option is to pick up PlayStation Now, Sony's streaming service that lets you stream PS3 games onto PS4 for a premium price. If you want to play PS2 games -- you can -- but only the one's Sony offers up as enhanced "PS2 Classics," which isn't a whole lot. And if you want to play some PS1 games: you're simply out of luck.

And all of this is rather unfortunate, as PlayStation has a vast library of top-notch games that feel as if they are -- at least in the moment -- lost to time. If you're like me and hoping Sony will change this soon: well then I have some bad news...it doesn't look like that is happening.

PlayStation global sales and marketing head Jim Ryan recently sat down with Time, who brought up the topic of backwards compatibility, to which Ryan responded:

"When we've dabbled with backwards compatibility, I can say it is one of those features that is much requested, but not actually used much. That, and I was at a Gran Turismo event recently where they had PS1, PS2, PS3 and PS4 games, and the PS1 and the PS2 games, they looked ancient, like why would anybody play this?"

As you can see, if Ryan is anything to go by, backwards compatibility isn't coming to the PS4 anytime soon.

In other recent and related news, Sony also announced yesterday that PS VR has sold over 1 million units and that PS4 is nearing 60 million. It also revealed that PS4 exclusive, Horizon: Zero Dawn, has sold 3.4 million copies as of April 30th, and that every one and five PS4s sold is a PS4 Pro.