And what about the costs of designing, building, marketing and supporting iOS ?

Very much getting into the hundreds of millions if not billions.

This is their product, and they are not giving it away for free, last time I checked...

I wonder why a competitor hasn’t sprung up if it’s just millions.

You need a phone to be a competitor.

There are hundreds of phone manufacturers.

Should be pretty easy to topple Apple if you just need to throw a few million at the problem.