About 70% of SaaS Unicorns Are New Versions of Existing Categories of Software (saastr.com)

Makes you wonder how much first mover advantage really matters.

Just intrigued.. how would Square be considered to be in a new category? They've had some interesting innovations (e.g. the iPhone-based card reader) but business-wise they're a payment processing and PoS company which is a long established field.

Well that isn't a surprise, because the only difference in meaning is the way the software is delivered.