The vast majority of my company's enterprise plan use is through Claude Code even though we have access to the API and could be using OpenCode instead.
I don't fully agree with the premise that they intentionally increase system prompts, but the enterprise plan usage is going to make that a huge income for Anthropic.
The fact that individuals are more likely to use the alternatives than businesses is telling.
Anthropic is fine, as long as someone else (a clueless employer drinking Dario Koolaid) is paying for it. But the moment you have to pay for it, people just bail and go for DeepSeek, Kimmi, OpenRouter, OpenCode Go and other alternatives that give more bang for the buck than Anthropic.
Edit: consumer Claude subs are the 5%. I’d bet most all of CC subs lump in under enterprise.