They've raised over $16 million [0]. For a decent 3-5x return for that, they would need to have been acquired for around ~$50 million. For a team of 19 [1], thats around $2.5 million per employee for Cloudflare. Worth it? no idea

[0] https://voidzero.dev/posts/announcing-series-a [1] https://voidzero.dev/about

Liquidity at some multiplier is easy to measure.

The value to the investors also includes the outcome of dealflow resulting from the relationships and network built up along the way.