Whole reason I first bought a flash cart at first was just to demo out games, that was probably what a lot of people thought of at first, but end up not following through. I didn't follow through on that much. If there's a game I really want, I'll try it first, then buy it. Before I had a cart, it was a pain in the ass buying a game you heard good things about then finding out that you yourself hated that game and how it played even if others praised it. Right now I'm planning on Sega Superstars Tennis (I like the game and nostalgia from it). Right now with all the roms I have dled, I would have only kept a handful, and that handful I actually went out and bought it.
Yeah I think since the R4 came out piracy is a huge thing now. I know a buncha people who went out and bought R4s, a lot of people that don't even know how to use the internet enough to figure out how to use the thing, they just bought it because they saw someone else with it. I think the problem with piracy being so big is its in the media light now. I think I've seen a couple blog's mentioning the R4 then a buncha R4 fanboys commenting on that same blog, and the number of comments would exceed many other articles on the blogs. Heck I've even seen it advertised on ign.com. If this gets any bigger in the media, companies might actually start listening more towards piracy and start making it harder to pirate.
Right now it's so easy, but Nintendo might actually do something with their next generation, maybe even going as far as doing what Microsoft does, activation. Imagine having to activate every game you buy. Lots of little game companies do these now don't they? I'm sure someone could circumvent future security measures, but it'll just get tougher and tougher, and companies who lose too much would just go out of business, then there would be nothing to really pirate anymore, thus everyone in the end would lose.
Back to my first statement, where a lot of people (before probably) bought a cart to demo a game and see how it plays to go out and buy it. Maybe if Nintendo offered a damn demo for every game, then maybe that would help. I know if I were able to demo games for free before hand, I probably would have never have bought this flash cart, because I would never had really thought about it. Also maybe since it looks like a lot of games will just be downloaded in the future, instead of a fee per user, just make the game able to be installed like 4 times per game, like when you buy Office you can install it on 3 computers in your house.
Just my opinion on the topic.