Sony eventually allowed cross-play on its platform back in 2018, and many multiplayer games have since launched with the feature across all platforms.

Why does Sony not allow crossplay?

It now appears that Sony may have been holding out to offset potential revenue losses. In the months leading up to Sony's decision to block Fortnite crossplay in 2018, Epic Games had pleaded with Sony to enable crossplay, emails in the Epic Games v. Apple case reveal.

Does Sony charge for crossplay?

Based on this document, Sony isn't outright charging for crossplay on PlayStation, though it is just one page from what seems to be a larger policy packet on crossplay. ... "If somebody were primarily playing on PlayStation, but paying on iPhone then this might trigger compensation," he said in court on Monday.