Then that means they either make more than that amount from searches made on iOS, or they consider that amount as the cost of doing business to keep their search engine as the default on iOS, and they'd lose more money if they didn't.
What percentage of their ad revenue is generated from iPhone users searches?
Does the analyst offer any explanation where he got his figures from? No. Then you should assume they were pulled out of the ass
And it's 5% of apples revenue.
and about 20-25% of Apple's net profit.
yes and it's about equivalent to Google's entire net profit.