Earlier quoted context omitted.
They didn't have funding (other than YC, which at the time was $6k/founder, not nearly enough to support an employee) until right before they hired Aston. Drew had approached me about being employee #2 for DropBox, and I had lunch with him, Arash, and Aston in Feb 2008. They'd only closed the Sequoia seed round about a month before. IIUC, Aston had been officially hired the day before. I (stupidly in hindsight, but f…
Interesting example. Genuine question, had it been the opposite, if you circle back in time, would you really take that job? (Trick question: Are you less happy than you think you would have been in other case?)
I do think that my reasons for not taking the job have been invalidated by future experience. My top reason was "I'm not going to leave my cofounder", and then he ended up leaving me 2 months later. My second reason was "Well, you've got a startup, I've got a startup, it is unclear which of us is actually going to succeed," and of course my startup was dead in 6 months while DropBox is now a $10B company. (Interestingly, I had a gut feeling at the time that I was turning down something important - I could tell Drew/Arash/Aston were crazy smart, and I really liked their product concept video.) But Drew actually told me "Honestly, if I were in your position - and I have been in your position - I wouldn't take the job" and he was right. The bargain we make as entrepreneurs is getting to call the shots, and the consequence of this is that sometimes we make the wrong call, and in a way it's not wrong after all because the whole point was making the call in the first place.
There's also the issue of whether DropBox would be a billion-dollar company at all if they'd hired me. I think my skillset actually duplicated Aston's to a fairly large extent, and we would've argued over technology choices (I would've pushed for Django, JQuery, and git over Pylons, Prototype.js, and Hg - the fact that these won in the wider webdev world is immaterial, just arguing over them would've cost precious time that a startup can't afford). Instead they hired some very talented MIT grads instead, and my understanding is that these engineers were responsible for things like reverse-engineering the Finder and writing the syncing algorithm that were what really contributed to DropBox's success.