[refulgentis]

As a founder of new POS system company (Ambur iPad POS), I just don't see this as true. Most of the bigger POS companies might have reasons to maintain the status quo, but mobile touch devices are literally revolutionizing the industry, because it means there's opportunity for small players to build systems on commodity touch hardware, designing software that's actually easy to use and reasonably priced.

Square needs to allow other POS vendors to use their APIs to truly conquer this space. Their system is currently woefully inadequate for anyone except small businesses with literally no need to do anything except charge a customer right away, without any paper receipts. That limits their business market to essentially small coffee shop or retail vendors with technologically advanced customers. That's a...small market, to be polite.