Why turn the question around? Can’t you name any? Look at the market share numbers. They speak for themselves.
I would have thought that the whole "the competition is winning in terms of profitless market share" argument would have been beaten to death by now. Not least because Apple continues to command the lion's share of profits in the respective markets they compete in, despite having minority market share.
This works because while something like 20% worldwide smartphone market share sounds like a rather small number, it's still a very number in an absolute sense (Apple has well over a 1 billion active iPhone users at this point, for example). Enough to sustain its own thriving ecosystem.
I also ask because I really am not seeing anything the competition is offering that would make me remotely tempted to throw my existing Apple setup out of the window and switch over entirely. I am all-in on the Apple ecosystem and it's working great for me.
First is the iPhone (I am currently using the 13 pro max), with its great battery life, good screen, and the wide ecosystem of apps (people often hype up Android's ability to sideload, but remain quiet when I point out that you can't sideload an app that simply doesn't exist for Android, like 1password, Ivory, Overcast, Notability, Things, Play, Infuse and Fantastical (there used to be more, but a couple have gone under since then).
Second is the iPad, which I have using to teach in the classroom for 12 years now. Windows tablets simply do not come close to replacing the iPad for me because of the way I use it (I do not want a desktop OS running on it), while android tablets continue to lack apps such as notability, and they only just recently got lumafusion.
Next is my M1 MBA which is still going strong. Long battery life, excellent performance, no noise or heat, and macOS comes with quite a bit of notability out of the box (till this day, I don't understand why I have to open a pdf in Microsoft Edge in order to annotate on it, instead of a dedicated pdf management app).
Rounding out the Apple ecosystem are the Apple Watch, AirPods Pro, AirTags and Apple TV. I sync my photos and back up my devices using iCloud. I toss files around with airdrop. Continuity lets me receive and make calls on my other devices. I save articles to reading list. People often make light of Apple's services, but they do go a long way towards making the Apple experience more cohesive.
My 2017 5k iMac no longer receives updates, but my dad still uses it to watch movies and for light productivity. One thing I notice about windows is that they simply do not make any decent AIO PCs (though to be fair, neither does Apple of late). 😕
I don't exactly game either (have a Switch that's gathering dust somewhere), so I am not missing out by not getting a costly and bulky gaming PC either.
So yeah, what exactly is the competition doing to compete against all of this? I ask because I am honestly not seeing it.