Because that could be easily resolved by factoring % cache hits into the usage limits.
> Literally everyone does this.
Never a strong justification, much as I like Anthropic in general.
Why is the 'Mercedes gas station' selling gas 85% cheaper but only to Mercedes drivers?
Why is the 'Apple electric company' selling cheaper electricity to households with Apple devices?
They're not the strongest analogies, I'll admit, but that's what it smells like to me.