You can certainly use the tools for anything you like! We have been focused on working with newsrooms, where we feel we'll make the most impact. You can use the Ask tool to build a form, or Talk to power your comment space.
Once we reach better adoption, and we have seen quite the adoption (just today The Intercept launched[0]), we'll be able to focus on improving the landscape further.
[0]: https://theintercept.com/2017/12/18/comments-coral-project/
From the site, Ask and Talk seem to be aimed exclusively at News Sites (Online Journalism.)
What's your Team's take on using Talk/Ask for other purposes like Blogs or community sites for companies?