They're not a company. They made some decision to not add more to the Pile, as they think it is complete enough. However, you could go to the Discord and propos

They're not a company. They made some decision to not add more to the Pile, as they think it is complete enough. However, you could go to the Discord and propose a restarting of the Pile project, they allow those. On the Github, it looks like the next step after a restart would be the Pile v2, a multilingual dataset. Good luck!