Luck plays a huge role in everything, but by all accounts this team created one of the best apps to grace the App Store. This wasn't a generic automation app.
Agreed. It may have been luck that they were successful at first (I honestly have no idea), but it seems very clear that they took whatever advantages they had and how to execute on them to continue to make a great product and keep improving it. By the time you get to today I think it's fair to say they earned their place. They're pretty far past where luck alone would take you.