Five years from now? First off, my Doctor gave me 6 months to live. I told him I couldn't pay him so he gave me another 6 months. Now to the question. Women are a prime target market for the future, just ask the brains at Harley Davidson. When Harley sales began a decline due to the fact that us old school riders are an aging group and young riders don't care as much about the Harley mystique as they do about performance and looks, HD realized that they needed a new market and started targeting women. I think the same holds true for knives.
Tacticals, whether they be fixed or folding will never go away and IMHO will be just as big of a market segment as they are today. Go to your local shooting store and try to buy ammo for your six shooter. A lot of it is tough to find. Sure, the manufacturers are sending a lot to the middle east but tons of it are being bought up by individuals that feel that they need to be ready for the Apocalypse. Survivalist groups are on the rise. I don't think our sense of impending doom will dissipate and go away over the next five years. And I sure as hell don't see gangs leaving our society any time in the future. Everyone will want to be armed in one way or another.
I think Sambar stag and Desert Ironwood will become the new ivory and tortoise shell in terms of availability and desirability. I can't afford either one now, I can't imagine what the price will be in 5 years - if there is any available at all.
I disagree with the idea that Loveless style knives will go out of style. They are good functional designs that will be around forever. Look in your gun safe. The semi-auto pistol in there was probably made from a design created in 1911. If it's good and it works, it won't go away and shouldn't.
My generation grew up watching cowboy and indian and war movies on black and white t.v. We all wanted a lever action carbine like the Rifleman. Newer generations have grown up killing hookers with a chain saw on Grand Theft Auto. The weapons used in todays video games will be what the coming generations want in real life. That includes the sharp pointy objects they have used in their video games. What once was considered a " Fantasy art knife" might be the EDC of the future. When making knives we really have to give thought to who will be buying them and for what reasons.
Damn, I'm windy. Last but not least, if you think Irag and Afghanistan will be the last battlefieds we'll see in our lives you are just plain nuts. History repeats itself. There will always be a new war on the horizon as long as man is on this earth and those new warriors will still need knives. What we make and sell/send them will still have to have the same utility that knives have had since the beginning of time. What will change will be the steels and the handle materials.
Oops, one more thing. I don't believe that hunting will cease to exist or even decline. Illinois is being overrun with deer. Kentucky now has an elk population big enough to hunt and there is talk of opening a black bear season. Coyotes are multiplying rapidly. The animals we hunt are adapting to a different landscape but they are still out there and thriving. All a lack of hunting land does is create more hunting clubs and preserves. We'll need just as many hunters and skinners in 5 years as we do now.
Times will change and materials will change but people and their needs never will.