No objection towards charging for cache hits, when the worker would have ran. That (except in worker-to-worker invocations) is always a strict upgrade, when it comes to pricing.

Worker-to-worker invocations also now participate in the cache, so despite the pricing increase, at least we’re getting some added value.

But for static assets in particular, I don’t see what value the cache is adding, so it feels like pure price segmentation.

Or, to put it another way, you were already caching the static assets and not having the workers serve them. Now you're doing the same thing, but charging for it.