You're right, but this round developers are also considering how much 1) people are spending on each platform, 2) how fragmented each platform is If people are

You're right, but this round developers are also considering how much 1) people are spending on each platform, 2) how fragmented each platform is If people are spending 80% of software sales on a platform with 15% of the market, with 5% of the support costs (due to lack of fragmentation) it's still a compelling platform for developers. I haven't looked up the exact numbers, I'm just saying that there are some combinations which are pretty compelling as a developer and actually make a platform more relevant even if it has a small percentage of the market's install base. Lastly, the market is growing rapidly - Apple still has the highest customer satisfaction which means people are more loyal to the brand.