> Oh, by the way, Apple has been on and off as the top PC vendor in the world for the past 3 years...

Sure, Apple makes more desktop/laptops than any other manufacturer; but far less than the entire Windows market; they are a great hardware manufacturer and remarkably durable there, but they have a history of establishing a market and then receding in relevance as a platform even if they remain the biggest single hardware manufacturer. Microsoft's OS did that to them in the PC market, and Google's may well do it to them in the mobile space.

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.

The fragmentation and brand loyalty issues were real, frequently cited, and considered by developers in the PC market as well. Heck there are still forms that do Mac-only development in the PC space for that reason, and this was a lot more common in the first decade and a half or so of the era of personal computers.

I thought they were a firm number one and iPads the number one computer. Just to clarify because I didn't know it was on and off, do you have a source at all just to see the details of that statistic?