Stewart Butterfield, co-founder of Flickr and his latest company Tiny Speck, published an internal email from around the middle of development on their collaboration app Slack:
“There’s no point doing this to be small. We should go big, if only because there are a lot of people in the world who deserve Slack. Going big also means that it will have to be really, really good. But that’s convenient, since there’s also no point doing it if it is not really, really good.”
It’s long but there’s a lot of good stuff in it on marketing and building a product people need.