You know who you are:
You're building a mobile web app, but you're only supporting iOS and Android. Neither of which are exactly "web friendly" (I'm especially looking at you, iOS).
You're making a hybrid app with PhoneGap, but you're only using the iOS or Android build options. Because, well... because.
You see things with amazing mobile HTML5 support like BlackBerry 10, Tizen and FireFox OS and say "well, if they ever get more marketshare, we'll spend some time supporting them".
You're the "chicken" in the "chicken and egg" problem
Stick with me, this analogy holds. You know how developers like to wait for a platform to gain marketshare before they spend time supporting it? Well, that means less apps and compatible websites will launch on that platform. Less apps and websites means less curb appeal for consumers. Less consumers means... less marketshare.
By chickening out, you'reContinue...