No, it isn't. No LLM platform ever will be. No platform or vendor of any kind ever will be, if we are being honest. One cannot set up a business where another company becomes critical to your operations. You can certainly use platforms and vendors in your day-to-day operations, but you always need a backup / business continuity plan because you never know when a vendor will flake out on you, for any variety of reasons.

It seems like many startups learn this lesson painfully, and most people who have been around the block a few times know it well. So I'm not certain why people are disregarding it when it comes to LLMs.

For a multi-billion dollar megacorp, dealing/fixing things for individual customers is in the too-hard basket.