I think it's worth pointing out here that the most successful (largest) companies are full-stack vendors that have as few external dependencies as possible. Lo

I think it's worth pointing out here that the most successful (largest) companies are full-stack vendors that have as few external dependencies as possible. Look at the histories of Google, Amazon, Apple, Facebook, eBay, Adobe, IBM, HP, etc. All of them had complete, standalone products right out of the gate. More to the point, they took the revenue from that product and then moved to ruthlessly and consistently 'fill gaps', displacing other businesses along the way. If your business depends on somebody else's "platform", then you're quite likely living on borrowed time. It might be okay as a way to bootstrap, but I'd recommend getting as independent as you can, as soon as possible.