As an android user who lives in OSX, I can say that the level of integration for calendar and photo/filestore share isn't as positive an experience as it could be, if you're used to iCloud. It would demand the apple people deciding to invest in that codepath, which frankly they probably have negative motivation to do: better to leave it sub-par and drive people to an iOS device for better interop of handheld and desktop/laptop.
I also think build quality of Android UI is highly variable. I'm on a mixture of Samsung (tablet) and Motorola (phone) and the conformance to UI is .. mixed. You have the freedom to pick alternate launchers, but you don't have the freedom to run a "stock" experience like Pixel offers, because .. well.. its Googles UI not the openly available UI. By comparison, the functional elements on iOS are really what they are (I do recognize 3rd party apps on iOS sometimes stretch this, I help an octegenarian with Google Mail and Facebook and the in-app behaviour of some things to do with clipboard and inter-app Sharing is dire)
I'm unlikely to move back to all-apple. I have no strong rooted reasoning there, The buy cost of an iPhone is really extremene compared to batterylife-cpu-camera value outside in Android, but oddly the buy cost of a smaller iPad is lower than a high-end Samsung tablet. It's unexpectedly expensive sometimes not to be inside the ecology.
Apple device photographs are gorgeous. Some Android cameras come close, some might even exceed: folded mirror/prism optics give you pretty good realzoom these days but something about the overall image process path on an iPhone has me in awe: I like my android camera but its chalk and cheese.
You can't iCloud on Android except via Browser. The price per bit inside iCloud is pretty good. I'd think about total systems cost, "TCO for users" if you like. I live in Google One but frankly, right now bit-for-bit iCloud would be better value for money.