Mobile advertising is a growth industry. By how much depends on your source of information but no matter the source, if you don’t see a serious growth curve / upside then it’s not likely to be reliable.
Let’s take a look at what eMarketer sees as the future of growth for mobile ad revenue. Nice numbers even if you chopped them in half.
With this kind of growth you might suspect that there will be plenty to go around no matter the size of the advertising venue but in this case it will be a case of the rich getting richer. The rich being referred to is primarily Google by a large margin. Look at this chart and you will see that when it comes to mobile advertising Google is making the game quite lopsided.