[citation][nom]srhelicity[/nom]If you rent a movie, do you keep it too since you paid money for it? When you rent a car, do you just not return it since you spent some money on it? When you buy a piece of software, you implicitly agree to the EULA. Inside that EULA, you'll note that it allows you to do certain things, and it makes it "illegal" to do others. By buying and installing the software, you are agreeing to their terms. If you don't like the terms, then don't use the product. [/citation]
I don't think your comparison holds water. You explicitly mention renting and leasing, but they are different from buying. If you buy something, and you paid for it in full, you own that something and yes, you should be able to do whatever the heck you want with it.
If I rent a car I pay for the privilege of using it for a limited time, but if I bought it I can set it on fire if I want to. Why? Because it's mine!
Also, the way that EULAs are presented to the consumer makes it ridiculously hard to acknowledge their terms unless you open the package and start the installation process. Try to return an opened software package and see what happens... I know, there are ways of looking that info up online but be honest, do you actually believe that people do that? Not to mention that if you want to try the software you must install it, there is no other way. What if you decide you don't like it? Same problem as above.
My point is, this whole EULA stuff is specifically designed to screw the customer over and they are one of the biggest scam ever invented by greedy MF-ers.