Oh yeah, I agree it's more effective, by far. I imagine that's why Google has Opinion Rewards and other companies use surveys to directly understand the needs of their customers. Though getting people in mass to volunteer that info, especially without some small profit incentive like Opinion Rewards might be tricky.

At least in the realm of targeted advertising, the closest example to user input would be when you set up an account, you're prompted to select your interests. Like with Windows 10, when you're setting it up for the first time, you'll be asked about your interests, which Microsoft will then use to send ads and news pertaining to those categories.

But yeah, I see what you mean