Also, Claude Code is the agentic harness with the underlying models being the anthropic ones. If it's the harness you're worried about, try out Codex or any of the open source ones like OpenCode, Pi, Goose.
This will never go away. Instead it will become more local. In the future, it's more likely that you have a model running on your computer. These companies have no moat. You don't need to worry about it going away or them charging beyond what you can pay.
For now, all my Codex projects include instructions to comment all code for human readers, develop unit tests, and document everything in human readable formats with a human audience in mind.
Caveat: I was a pretty decent programmer before AI.
It won't. There are dumps of the early Claude Code codebase/repo and it can be rebuilt from scratch by the community.
You might lose access to Anthropic's models one day, but there are hundreds of alternative model choices.
I irregularly use a framework similar to the one by Klein, Sonkin, Paul Johnson https://leonlins.com/writing/premortem to get one AI agent to consider the problems and potential solutions to vendor lock in.
If this is for Claude specifically, feels like most common alternatives (Codex) are viable.
If this is for AI agents generally, I've been backing up local model workflows as well
When GPT does poorly, I use Cursor. The autocomplete itself is extremely good.
And then there's Kimi code and similar which can't keep up with the existing demand, much less the demand if all other tools go down.
Then Opencode, which would probably be a year or so behind SOTA but it's good enough.
What’s been the biggest blocker for you?
If Ed Zitron is to be believed, Anthropic, and all the other LLM based tools companies are bleeding cash at one of the highest burn rates in history, subsidizing your tools, and likely giving them to you at around 5-10% of their costs. Even if you're prepared to pay 10x or more for the same thing, most aren't, and they don't have a sustainable future.
Your best bet is to develop a local capability on your own hardware while you've still got Claude to compare it to.
Second best is to have an LLM model and harness you can run in the cloud independent of Anthropic or any other AI company.