Does anyone have a theory on what enabled Instagram to get to 27m users with only 13 employees in 2012, and why that still seems very difficult today despite all the SASS products helping startups?

Some game companies also used to release a new game monthly in the 90s, without code completion, Copilot, Git, Github!

gigameshmusic.com | formerly @optimism, @soundxyz, @farther

Watch Kevin Systroms interview with Lex. He talks at length about this. 

Tl,dr they managed to upload pics in the backgroud while people played with filters, drastically improving upload time> Engagement > Users