I spent money on android because the Google rewards program gives it in exchange for me filling out surveys ( I assume to verify their analytics) and I spent zero dollars on iOS.
I prefer getting paid for my opinions. I'll gladly provide analytics for those who directly ask giving me the option to say I prefer not to answer.
There needs to be people like you to balance the costs for someone like myself because knowing my age, marriage status size of company isn't worth the amount they pay me for it.
They use those surveys to measure how well brand advertising is working. Brand advertising is where you try to get people to remember your brand, even if they don't buy a product right away.
They'll show you 5 ads for a brand of car, and then a few weeks later ask which brand of car you have heard of for example. They also ask people who haven't seen the ads for comparison.
That data is used by Google to demonstrate how valuable their ads are.
They only need a small percentage of people to answer the survey to get results across the whole population.
