Perhaps you haven't had the pleasure of eating fresh-picked strawberries from Watsonville on your drive down PCH 1. Strawberries that are shipped across the US (Watsonville produces something like 40%) are picked under-ripe and will not sweeten more along the way.

Ripe, Watsonville farm-stand strawberries are something else entirely. They can indeed be fist sized. I encourage you to try them yourself.

Alternatively, you can go to pick your own places along the way - also fantastic.