For quite some time maddog has been promoting Subutai, a kind of P2P cloud (https://subutai.io/). Voluntary computing is an old concept, even BOINC is almost 20 years old. Peertube already reached the stage where it's actually usable and people can watch the movies smoothly. So it's not unimaginable that people who care organize somehow creating a platform where you could use a GPT-3 platform by contributing your GPU time in exchange.