On the other, more cynical, hand, if you can't even or don't want to register the company yourself then what are you doing?
One example use case: if you are a bank and your user needs an LLC + EIN to open an account with you, instead of giving them a guide and saying "here is what you need to do" -> they could use our API -> offer formation + EIN directly in app -> seamless process to now onboard.
It's programmatic + fully automated for the platform to call our API -> behind the scenes on our side, most of the end to end process is automated with some "human in the loop" reviews at key points for filings or taxes.