Any big idea is going to take a while to get there… by definition if it’s big and no one has done it before it’s not going to be 1, 2, 3 – we got it. There is going to be a dark period in there because you don’t know what the key to get in there is.
Lean startups often rapidly reach a local-maximum product which does not deliver product/market fit. They give up on their original idea and pivot – missing out on a massive opportunity. Pivoting will allow the startup to explore a different space, but they’re just as likely to produce a local-maximum product there and repeat the process.
If we believe in our ideas we should be prepared to properly explore the spaces they inhabit before giving up on them.