Why Is Google Adsense Taking Away Our Visitors?

Many webmasters rely on Google Adsense for additional income, and I am aware that if a visitor clicks on one of the content ads by Google Adsense, he/she is lead to a different site. I've always wondered why Adsense wouldn't create a new window for clicking on their content listings because that way Google and the webmaster will both make more profit. It would be a lot smarter for Google to make their content listings to show the page on a new browser. But I found out that Google 'cares' about their advertisers. Google charges so much per click without guaranteeing any sales for the benefit of the merchant. Merchants spend a lot in advertising their site and products on Google with only a handful making enough sales to justify the cost for advertising. Not many are able to continue to advertise on Google because they usually run out of capital. Because of this, Google is not only looking for people to click on their content listings to make themselves more money, but rather looking for ways to provide higher conversion rate for their merchants. Providing a new browser for every content listings will only increase the chance of the merchant paying more money to Google without much in return. For me, I personally like opening up as many browsers as I can with relevant contents and glimpse through them briefly until I find something that interests me. If I open up 10 browsers, I end up closing 8 of them. That means 80% of the merchants are receiving hopeless clicks and is still being charged for them. Google would be happy, and so will the webmaster that presents Adsense on their site, but merchants, Google's customers, are not. For Google to stay alive, they have to care about their advertisers, their customers, before they care about themselves. For this reason, I believe that Google's way of presenting Adsense and leading visitors on the same browser is the smart way for Google to offer a win-win environment for both their advertisers and their webmasters who are helping Google to expose their content listings outside their boundaries.