Why do some companies pump out founders more than others?

Coinbase -> @paradigm, @farcaster, @bountycaster, Magic Eden, Coin Center, Ema, Linear, Polychain, Litecoin, Sardine, Fal, Infinite, Definitive, Neon
0x -> Phantom, Azuki
Bitgo -> NFT Oasis, Fordefi
TRM Labs -> Integrated Reasoning

Who else?

I think some companies consistently produce founders because of:

1) high talent density
2) a bias toward hiring entrepreneurial people
3) a culture that fosters innovation — hackathons, founder-friendly policies, lunch & learns, etc.

early @coinbase nailed this, it was an amazing place to work