He's right when it comes to games.
But not so much when it comes to the libraries that underlie games and the marketing of games. Though the free software community has so far failed to developer a business model for producing original games, it has excelled at producing infrastructure. EA's ports of Tetris to Android run on top of free libraries. Tetris Zone was first made for OS X, whose low-level components are based on Mach and FreeBSD. Tetris can be played over the Internet, and many TCP/IP stacks are based on the free TCP/IP implementation released by AT&T in 1989 as free software. Tetris has a Twitter account, and Twitter was originally written in the free language Ruby until it switched to the free language Scala. Tetris.com uses the CloudFlare CDN, which according to Netcraft runs Linux. Yet Mr. Pajitnov thinks all the free software on which his business depends "should never have existed".
I'm surprised you didn't ask [pastiche of my previous question patterns]
I've moved on. Best practice is "prototype your original game on PC first then talk to Sony", contacting is "@tetris_official will tell you what you need to know", and how same-screen Tetris works is "whatever BPS and its partners have put out on the latest console".