The reasons to adopt a mobile first strategy go well beyond the exploding mobile usage numbers:
Drive focus and excellence. Successful mobile-optimised services must be focused and elegant.
Prioritization and strategic choices have to be made. This will help you clarify your offering, focus and strategy.
Find new customers. A large proportion of your future customers are mainly mobile.
Learn new tricks. There’s a significant difference between yesterday’s “software” experiences that target PCs, and tomorrow’s post-PC experiences designed to fluidly scale across platforms. Focusing on the latter will help you master modern service design.
Disrupt yourself before others do. The innovation you do on mobile platforms can directly influence and benefit your other target platforms too – digital and non-digital. If you don’t find ways to disrupt your business using mobile, it’s likely that other mobile-focused companies will.
Be relevant at all times. Mobile will make you atomize your service to fit into the daily life and tasks of users.
Get closer to your customers. In mobile you can create a stronger emotional bond, and a mobile focus will help you organise and design around users rather than around software platforms or “channels.”
Become better at design. The personal and lush mobile medium demands first-class design, and if you aspire to have a leadership position in mobile you will have to focus on design.