We are starting with billing indeed, with a long term vision of becoming the « open revenue hub » (laid out the high level steps here: https://www.getlago.com/blog/lago-raises-22-millions), meaning we want to offer an open alternative to everything RevOps. Instead of choosing to be in a closed source ecosystem like Stripe’s (they have 21 products and most founders don’t realise they are using 3-6 of them, not only « Stripe payments », each of them usually taking a cut on revenue), you could build a customised stack, in a « best of breed » approach, and add the long tail of tools/use cases/home-grown system if you’d like.