What makes (or breaks) an early-stage team?

I feel like there is a lot of talk about product, marketing, and launch strategies, but not enough about people.

So, I’m curious: in your experience, what truly makes an early-stage team work well?

And, on the flip side, what are the red flags or common pitfalls that can derail a team early on?

• Was it about the complementary skills?

• Shared obsession?

• Clear roles?

Or...

• Maybe it was misaligned expectations?

• Ego clashes?

• Or just moving at different speeds?

I’m building something right now and thinking a lot about how to shape the right dynamic from the start. Would love to hear your lessons - good, bad, or surprising.