Yes, of course an idea is only a billion dollar idea once it is built out, but a good team is also only determined in hindsight too. More importantly, while so

Yes, of course an idea is only a billion dollar idea once it is built out, but a good team is also only determined in hindsight too. More importantly, while some ideas have the potential to be billion dollar ideas, most don't. The ideas that have a reasonable chance of being billion dollar ideas are very rare, much rarer than teams that have the same potential.