Both Espressif and Raspberry pi (pico) target OEMs who will buy millions of their chips. They've both embraced the hobbyist market as well, but it's not how they've recouped their investment.

Arduino targets the hobyist market where customers will buy one (or at best a handful) of their boards. Arduino simply has no other way of recouping their investment than selling expensive hardware.

So I don't think it's fair to say that Arduino is being greedy. Also FWIW, Espressif's official dev boards are also pretty expensive. Not Arduino expensive, but several times the price of identical "clones" based on the same reference design and using the same official esp32 module.