But so much investment in their platforms, not just their APIs?
Why? It sounds like the stupidest idea ever. Interchangeability = no lock-in = no moot.
Now that you’re winning, others start cloning your API to siphon your users.
Now that you’re losing, you start cloning the current winner, who is probably a clone of your clone.
Highly competitive markets tend to normalize, because lock-in is a cost you can’t charge and remain competitive. The customer holds power here, not the supplier.
Thats also why everyone is trying to build into the less competitive spaces, where they could potentially moat. Tooling, certs, specialized training data, etc
They are developing their moats with the platform tooling around it right now though. Look at Anthropic with Routines and OpenAI with Agents. Drop that capability in to a business with loose controls and suddenly you have a very sticky product with high switching costs. Meanwhile if you stick with purely the ‘chat’ use cases, even Cowork and scheduled tasks, you maintain portability.