[mbesto]

My company builds enterprise grade apps (meaning they tie into enterprise systems) and what often is missed is the amount of time (money) required to get usability correct. What often is missed is why usability is important. They think their web application or on-premise application can simply be ported over to mobile very easily.

WRONG. Mobile applications supplement existing solutions, which means they generally are a subset of features tailored to a handheld device. Enterprises generally don't adapt a lean methodology. For example they just assume that the current Facebook app you see today was birthed in a weekend...as Facebook itself was. Which, as we know all know here, is simply not true.