Will Adsense Last ?

this is both a post and a question!
over the last few months, many people got Rich off of the internet, and the ways that they used are so many, they sold products, they became affiliates and sold other people's stuff! either way is good and made so many people Rich!
But the most significant breakthrough is Adsense, it's certainly the easiest way to make money over the internet, that's because you only have to insert ads on your webpages and get a certain amount of money when someone clicks on the them!
i'm not trying to promote anything here, i'm just wondering (myself) about this somehow Great Idea and thank the Guy or the people at Google who came up with it!
but the problem is that lots and lots of internet marketers created Ebooks, pieces of software and many other applications that revolve around Adsense, but the weird thing was the Boom of Adsense Ready websites, that seemed to be the Easiest way to earn money through Adsense! thousands of Pages, with lots of ready content, you just have to buy and upload, and see the money come in, but that is not gonna last simply because of the so called duplicate content; Search engines ban websites with such content ! so here's another problem with this Fast and Simple approach to making money, Content!
other people who are smarter created software that made building websites a lot easier, not any kind of websites, but websites made For Adsense or what is known as MFA's.
you just choose a topic and let the software do the work for you, it gathers articles from websites all over the internet and puts them in HTML format and there you are, you got a website, ready to be uploaded.
are these "techniques" working well ? i asked some people and told me that it is actually working if you spend some time and work on your ready websites!
sure all these things are Great, but will they Last ?