Peter Thiel defines a startup as such in Zero to One - A startup is the largest group of people you can convince of a plan to build a different future.

So is that different future one where there will be further penetration & distribution of existing Square products or will we continue to see Square more horizontally integrate services for businesses? I personally think they have lacked a clear vision over the past few years but have reshaped it and resold that to investors for a valuation 2x from 2yrs ago.