It's easy to understand a FAANG style offer in this context.
You join Google in 2017, you get RSUs pegged at 800$ a share valuation, about 150k$ a year vesting, by 2021 those shares are worth 2800$ so you've earned about 2.1 million (not exactly as taxes come into play).
You join AirBNB in 2017, valued at 30 billion, you get a similar offer, fast forward to today and AirBNB is now worth 100 billion, you might have made 2 million (again, not exactly, considering taxes and potential dilution). And AirBNB is one of Y Combinator's most successful start ups/exits.
From some quick google searching - there are thousands of Y Combinator companies and only ~29 are worth one billion or more. Of those billion, they are all at this time late stage and trying to guess which up and coming Y Combinator company will be next to crack 1 billion is a very risky endeavour.
How does the tax implication of stock options really impact your net gain, and does that practically move the needle for a comparison against a standard FAANG offer?
Would be interesting to look at some cold hard numbers. Absolutely joining a 20M valuation YC company and sticking around until it grows to 1B would be incredibly lucrative - but how lucrative in a practical sense, given real offers? Dilution? Tax implications? Would love to see this analysis.