Ok, so in your scenario it’s not a break up. But a nuclear strike. Everything Google has ceases to exist if this happens and no one else steps up to take over or fill the gaps?
There are no other email providers? There are no other map providers?
Maybe Open Street Map? But if your fear is that Android would die without Google Maps I’m reasonably confident a replacement could be found that isn’t an Apple hardware device.
The same is true for the other services that Google provides.
There are no other email providers? There are no other map providers?