Interesting link. I'm not sure how to interpret these numbers though. It says Amazon gets $752 per user per year. But this seems like it is nothing to do with how much my eyeballs are worth - people give Amazon money in return for stuff. The only other brand on that list I use is Google. I'm outside the US, so it appears my eyeballs are worth $137 per year. That is an amount I'd be prepared to pay if it made adverts go away and the money was split between the content providers I do use. But it isn't really clear (to me) how the old guy on YouTube who restores the antique furniture would collect his 75% share due to my eyeball time.
For anyone who is a user of multiple brands, you need to add these numbers.