We believe in what we do and so far we've not been able to find another product with the same focus that builds upon the same principles and ideas. Wanting Nuclino to exist and our passion to create it, is what drives us most. As for competition from established players, I wholeheartedly agree with the comment from davidjgraph. Every new startup faces this challenge, but history shows that it can be difficult for large companies to mimic the success of new products.

Anything more concrete?

"nimble" "giants" are not two words I'd associate with (m)any companies... :)

Do you think a Trello/Asana/Slack/MS/Google wouldn't be "nimble" enough to riff on a successful feature? See: Facebook/Instagram -> Snap.

Trello = Atlassian, they already have a heavyweight wiki tool. Asana/Slack, why would they go outside their core competence.

But even if a company did want to copy something, it really comes down to passion and execution, I've seen this play out a number of times.

Trello, actually, makes a point here. Atlassian paid $425M for it, when they could have just copied it. There's a lot more to it.