It's not just Android manufacturers that hold back features on older devices as well. Apple does the same. Before Siri came out on the iPhone 4S, there was a Siri app that ran on the iPhone 4. Once Siri and the iPhone 4S were released, the Siri app is gone. The iPhone 4 didn't get Siri in the latest iOS update. If you wanted Siri, you had to buy a new phone. You can't even download the app anymore.
And that wasn't the only example. See for example the 60p (slo-mo) recording on the iPhone 4S. Or the antialiasing on the iPad 1 / 2. All removed by Apple to make people upgrade.
No wonder they're ueber-active over the Apple support forum. Whenever anyone enters a message asking whether a move of Apple is worth a class action/suit, the given question will be very short-lived. Generally, it'll be gone in 2-3 minutes. I'm, being an active contributor there, subscribed to several threads there and have seen this many time. (I receive mail notifications of every new - and still uncensored - posts of my subscribed threads. This also means I can even prove I'm right: I can post some of these original messages and the links to the now-censored public ones.) I've even checked several times whether the class suit part is gone immediately after receiving the notification. It was always gone in some minutes.
I wish Apple were as diligent and busy-working at actually innovating as censoring users' posts at their user forum. For example, let's start with
- Qi,
- true slow-mo videos (not the standard-definition, 640*360 120p joke the 5s has - the Samsung Note 3 and the LG G2 both have true 1920*1080 60p and the Sammy has true 1280*720 120p)
- wider-angle lens (particularly in video),
- Xenon flash,
- OIS,
- USB OTG,
- memory card slots,
- full, standardized Bluetooth support incl. OBEX file transfer,
- windowed OS on iPads,
- truly stereo speakers on iPads,
- f.lux (possible even on non-rooted Android devices)
- decent, high-quality HDMI output via SlimPort (not the Lightning lagging and lower-quality joke),
- Wacom support etc.
These are painfully missing from current iDevices, while they're all implemented by Android / WP devices. (Not
all of them in a
single device, of course. For example, the cheap Nexus 7 2013 "only" has Qi, truly stereo speakers, full Bluetooth support, f.lux-alikes, USB OTG and decent, high-quality HDMI output via SlimPort of the list. Still, it'd be GREAT to have any / all of them the at least 80% more expensive iPads / iPad Mini Retinas.)