This is most definately true and what I have thought about for a long time. Everyone always wonders why there aren't any pictures of so called "rare bikes", well those bikes obviously
DO EXIST even if there were only ~100 of them made.
Just think about it; how many Maico 501's were made? Almost 1000. Someone DOES have to have one and infact I've seen them before in person. It's not like these bikes don't exist but not everyone says "la de da let me take some photos and videos and dedicate a website to my bike and here's tons of information and virtual reality rides and games based on my bike! And let me submit articles to magainzes (whom may not even consider publishing b/c they are hard core only print info on brand new four strokes)" Unlike me

I mean, the biggest Maico site used to be
http://www.maicomadness.com/ which hasn't been updated in 10 YEARS. So, my thought was along with John's there are several reasons why ppl don't post videos or photos.
1. They don't feel like it.
I mean, why would they even want to do such a thing? Maybe they don't even have internet or have their own site or know where to post them. They just ride and that's it or it's just too much trouble.
2. They don't have a camera or they have an older computer.
Without proper equipement you aren't going to be posting anything.
3. They can't write.
So as John said they aren't going to write any articles about their new or rare bike.
4. They aren't technically or web savvy so they aren't going to put up a web page.
Half of those websites you see out there look like crap and are rarely ever even updated! There's websites that still have bikes listed they sold years ago. If they aren't web savvy they would have to pay someone to do it or they would open up a website on a crappy server like GEOshitties that has a ton of ads and their website would look like a myspace page (i.e. someone puked on a webpage).
There's two parts of maintaining a webpage. The first is the technical ability to implement the features and whatever advanced stuff you want to do. Some of this can be automated through tools or purchase of your own professional. The second is the artistic ability to create a nice usable webpage that is aesthetically appealing and easy to use. That portion you can buy also though or get free webtemplates (which I do) but you then go back tot he technical ability to modify those pages.
This is one of the reasons I was able to get one of my sites so popular
www.maicowerk.com. In fact, ppl sometimes email me asking for parts even though I clearly state on my page I'm not a shop, I don't sell parts and this is my personal page. But I take the time to scan in rare documents (like maico manuals and spares lists) and put them on the site for anyone to view for free. I'm probably not the only one with these documents but when I get them I provide them out. If everyone who had a copy scanned them in we'd have a lot more maico manuals downloable for free!