Android is struggling to keep its market share in the United States, as Apple continues to take over in the market. But, despite Android as a whole losing ground, Google Pixel phones are becoming a bigger slice of the US market.
Counterpoint Research reports that, in Q2 2023, US smartphone shipments dropped by 24% year-over-year. That includes both iPhones and Android phones, and virtually every brand saw a drop in shipments. Samsung saw US shipments drop by 37% while Motorola saw a 17% drop. TCL saw the biggest decline at just shy of 70% year-over-year, and even Apple saw a 6% drop.
Stuff like call screening in the android dialer would be possible on any brand of device. But no, pixel only.
Other OEMs also have their own features that are exclusive to their own phones. They can also implement them into AOSP, but they don't. Instead, they keep the features to their own devices. A lot of times when there's a new feature on Android in general, more often than not you'll see comments like "Samsung had this since years ago".
So if other OEMs are allowed to have platform specific features, Google is allowed to have theirs too. Or in other words, if you want to hold Google responsible for holding back Android, you have to also hold other OEMs responsible too.