As for the "positive action", this can be easily disputed and in fact may be just a scare tactic - the "I agree" button you click when installing is ambiguous enough to be useless in court if you really decide to fight. You can say that it wasn't you who clicked the button - it was your cat. If they want to arrest your cat, they can go ahead!
I don't believe you can blame your cat, but you could theoretically blame another user of the same computer (my husband/wife did it). Certainly people have beaten RIAA lawsuits by casting doubt on who actually pirated the files. On the other hand, this system has been upheld several times so there is at least some legality behind it.
I haven't seen one be challenged on the grounds that a minor agreed to it, although I'd be interested to see the fallout from such a case.
Furthermore, EULAs are not clearly stated upon pruchase of the product. This in a way means that the seller is perfomring a sort of a fraud - you're buying something for what you have no way of knowing the terms of use. If you knew the terms of use, then you might not buy it - but you don't. So essentially it could be stipulated that you are being sold something else than what you think you're buying - in other words a fraud.
Most state that the product is subject to an EULA on the outside of the box, even if the full text is not available. Some even give a website where the full text is available, although I wonder how many people are going to stop shopping to look it up before coming back to buy the game. Regardless, a person who buys a game and then finds they cannot or will not comply with the EULA can usually return it to the point of sale for refund, or some companies have numbers to call for refund included as part of the EULA.
And licensing can also be abused. In theory it should protect the owner of the copyright from having their work stolen (by whatever means), but in practice it is used for all sorts of "cash-milking". For example, there's an increasing rise in "limited duration" licensing, which forces you to actually "rent" your copy (Kaspersky Anti-Virus, for example). Other example would be "processor licenses" which enable you to use a certain number of processor cores when using the software (for example getting a license for a render farm is vastly more expensive than getting a single-user license of the same software). And so on. As I see it, all that is in fact a way to keep taking money from people for zero work from their side of things. Nice for them, but again, customer protection fails here.
No, your logic fails. There is nothing wrong with limited duration licensing for something like an anti-virus program, where they are not just selling you a disc with some software on it. Anti virus programs need constant updating to be useful, so the company is not just sitting back and raking in cash. Most virus software I've seen is based more on a subscription than yearly relicensing, but the concept is the same.
As for per-processor licensing, why not? If you are running the program on your home computer, you might be using 1 or 2 processors, at most 4. A render farm might have thousands, which is the equivalent of buying one copy to run on thousands of home computers at once. If you are going to run thousands of copies of their software at the same time, you should need to license for the use of all those copies. Your argument wouldn't work for LAN use, why should something like a server farm be any different?
The fact that a software house has to prove that you declared that you have accepted the agreement solves the problem of you claiming your cat clicked the button. This is why the law demands that both parties receive each others declarations. I am confident .us has some form of this requirement as well. I.e. imagine the most formal way of agreement: A written contract. Of course a party needs to receive the signature of the other party before the contract becomes usefull.
Nope, sure don't. If it is written into the agreement that way, a one-way retail contract like this does not need to be communicated back to the seller, acceptance is implied unless the consumer returns it as unaccepted. Think about it, such a requirement would make it impossible to install anything on an off line computer, as there would be no means of comunicating acceptance, and even signing a written agreement wouldn't cover it - how could anyone insure that the person who signed the agreement at purchase is the one installing and using the program?
It is very important to understand this: EULA's don't work in European countries, not because they are forbidden, not because laws are totally different, but because of subtle, minor differences in the law.
Yeah, right
The European laws are written in such a way as to prevent licensing in anything other than a face-to-face buisiness deal.