Nearly everybody I know buys them for sheet music
Which is a whoops move. I brought a tablet exactly for that, a samsung. Almost none of the software standardised in the music industry for sheet music actually runs on android (and thats partly because android historically had terrible audio apis, though it has gotten better). Ended up having to get an ipad. About the same price all up.
Sheet music != audio. Sheet music readers are PDF readers plus support for Bluetooth foot pedals to turn pages. The most popular app by far is MobileSheets, and it is available on iOS, Android, and Windows.
Yeah, there are subscription services for iPad that have some additional features that could be useful in some environments (e.g. slightly easier distribution of marked-up copies or using your camera to turn pages with facial gestures), but IMO not useful enough to be worth paying a subscription for it, even with my conductor hat on, much less with my individual musician hat on.
The apps on Android are more than good enough, and the literally dozens of people I know who use them are ample proof of that. Meanwhile, the only people I know who use iPads as sheet music readers own them primarily for other reasons, like drawing.
Apple just has zero "basic tablet"-class devices. The Air is pretty and all, but when you're carrying one of these things around every day in high-risk environments, the last thing you want to do is drop an $800 tablet. And that's for the Wi-Fi-only version.
Meanwhile, you can buy a basic 13-inch Android tablet complete with cellular for $160. And if you drop it, you can replace it with another one. And another one. And another one. And then a fifth one. And at that point, you've reached the cost of one iPad Air 13".
And if you leave it somewhere, you can easily locate it, because it has a cellular connection, unlike the $800 iPad Air. You need the $950 version for that. And now you can buy six for the same price instead of five.
It's not just that Apple tablets are a bit too expensive. It's that they're so extraordinarily overpriced that I can't see why anyone in their right minds would buy one unless they have some very specialized use case that can't be done on Android.
Don't get me wrong, the M4 is an amazing chip. Its performance cores' per-core speed is about 4x as fast as the cheap Unisoc chip in that Android tablet, and it has three of them instead of two. So from a pure spec perspective, the iPad wins hands down. But the problem is, most of what people do with these devices is play movies (with hardware codecs, not software). And even for the niche use cases, very few of them require much CPU. The performance per dollar is about equal, but convincing people that a slightly snappier UI is worth spending 6x the price is really, really hard, because for most people, it really isn't.
If I were buying a laptop, I'd buy Apple hands down. I do real workloads on that. It needs to be fast. But for tablets? The speed was basically good enough on my first-generation iPad Mini fourteen years ago. Everything since then has just been performance for the sake of performance, and almost nobody cares. Being faster only matters if you're one of the 3% of users who actually need a faster tablet (and there's an iPad Pro for that anyway).
And thin doesn't matter, either; exactly zero people have a single f**k to give about that outside of Infinite Loop and the donut building. (I am, of course, referring to the one two blocks from Infinite Loop that Apple engineers eat at during late-night hacking sessions because they're open 24 hours, not Apple's new campus; I doubt those folks care about thin, either.)
And all discussions about build quality, reliability, etc. go out the window when price differences approach an entire order of magnitude.
So Apple badly needs a genuine low-end tablet. In my opinion as a stockholder, they've needed one for a really long time. Great phones, great laptops, heinously overpriced tablets. Just my $0.10 (two cents adjusted for the price of Apple's RAM).