Android is more and more like the mobile equivalent of desktop Windows. Now they have the huge pirate market in China too. When this happened to Microsoft, certain strategy-oriented parts of the company were happy to see Windows spread everywhere as quickly as possible and deal with piracy later, whereas others were more concerned with the bottom line and how to extract revenue immediately. Google will have to deal w…
Its worst than that. A least with Windows on PC clones, you have control over the hardware and can update to your hearts content. Android makers often change the interface and can interfere with you from getting updates.
For those interested in having the latest version (most consumers aren't even aware their device is outdated, or don't care) there's CM and similar options. Driver issues exist with some hardware (Samsung Exynos for instance, prime example), and that's a shame, but it's not much different from going to GNU/Linux on x86, which I find is comparable (more up to date, generally better performance and UX, non-proprietary, but some hardware incompatibility)