Well, I was all set to type a simply wonderful reply with all sorts of colorful analagies (but Geo beat me to the punch by 2 Posts...

).
I think he's said it best so far. Every company spends quite a bit of time deciding the limits of their EULA, marketing, demos (and how restricted), and how best to sell the product. My Adobe Photoshop EULA is more relaxed than my Jasc Paint Shop Pro (hope I'm remembering the correct 2 apps). One allows me to have it installed in 2 places as long as they are not used at the same time. The other permits a second installation but only on a laptop. A very tiny difference. But used as an example of how detailed companies can get when deciding these things. They balance what is good for the owner of the license against potential sales (and sale losses).
In the case of SE4 (or ANY other piece of software), it's the company's decision. If they think a demo is needed, they'll make one available. If it's restrictive, that's their decision. If they wanted purchasers to act as advertisers on their behalf (and loan their game out to potential buyers), then they would have written it into the EULA.
So, you know what side of the fence I'm sitting on.
Piracy? Not piracy because a person didn't make a profit? That's BS. Piracy is defined at Dictionary.com as (paraphrasing) the unauthorized reproduction or use of copyrighted or patented material (like software piracy). Didn't say one had to make money off it.
In summary, whenever "consumers" take the position that
they have the write to draw a line in the sand of copyright violation, believe me, it will be a line that favors themselves
not the companies. (and they'll always find a nice twist that satisfies their moral conscience)