Not only do they develop these technologies (wifi location db, ibeacon, deep linking, findmy, etc)
They don't give you the ability to block them.
and of course, you can't find out what is going in and out of your phone over the network, and you definitely can't firewall it. ("content blockers" are nerfed)
You can disable almost all of those things in one way or another.
The problem is all of these things you mention are also useful for things users want. Often they are useful for things users want inside their applications. Nobody wants a neutered OS.
To disable ibeacon you turn off bluetooth and/or location services. I don't know about find my - it may locate other people's stuff no matter what you do. You can't really disable deep linking. If you get a text message with an amazon link, the amazon app will see it.
It is not apple's way to advertise this capability is available, and give you granular control.
They don't give you the ability to block them.
and of course, you can't find out what is going in and out of your phone over the network, and you definitely can't firewall it. ("content blockers" are nerfed)