The tool you build on just got bought

On June 16, SpaceX agreed to buy Cursor — the AI coding editor a lot of engineers now work in all day — for $60 billion in stock, days after SpaceX's record IPO. Axios called it the largest acquisition ever of a venture-backed startup. The deal folds Cursor into SpaceX's AI arm, built around Elon Musk's xAI.

The number is wild. But the number isn't the point. The point is simpler and closer to home: the tool your team builds on can change owners overnight — and its priorities, pricing, and roadmap change with it.

Your toolchain is now somebody's strategy

For a while, AI coding tools were independent products you could just pick on merit. That era is closing. The big labs and platforms are buying the tools developers stand on, because whoever owns the editor owns the daily habit. Cursor isn't the first and won't be the last.

When your tool becomes a piece of someone else's strategy, things you didn't choose start to move: the pricing model, the default model behind it, the data terms, what gets built next, what gets quietly deprecated. You didn't agree to any of that. You just opened your editor one morning and it belonged to a rocket company.

Don't marry your workflow to one tool

I'm not saying drop Cursor — it's a great tool. I'm saying don't let any single product become load-bearing in a way you can't undo. The same discipline I apply to models applies to tools: keep the thing most likely to change behind a line you can cross cheaply.

In practice:

• Keep the work portable. Your specs, your prompts, your evals, your repo conventions should live in your codebase, not inside one vendor's app. If they're portable, switching editors is a Tuesday, not a migration.
• Lean on open standards. Things like the Model Context Protocol, plain files, and standard git mean your setup isn't trapped in one product's format.
• Know your exit before you need it. Could you move to another agent/editor this week if the price doubled or the terms changed? If the answer is "no," that's a risk you took without noticing.

The consolidation is the real story

Zoom out and the pattern is clear: the coding-agent layer is consolidating into a few very large owners. That brings real benefits — more money, faster shipping — but it also means the tools you depend on are increasingly controlled by companies whose main business isn't your developer experience. Convenience now, dependency later.

The bottom line

A $60 billion deal for a code editor is a headline. The useful part is the reminder underneath it.

The tool you build on can be bought, repriced, or redirected without asking you — so keep your workflow portable and your exit cheap. Use the best tools, but don't let one of them own you. The habit that protects you is the same one that's protected you with models: build on the swap, not the snapshot.