patlmmm :
I TOLD INTEL 34 YEARS AGO YOU NEED TO STACK THE WAFERS ONTOP OF EACHOTHER I EVEN DID IT
MYSELF TO PROVE IT HEAR WE ARE 34 YEARS LATER DUUUUUUUUU AND NOW THEY START
34 YEARS AGO I TOLD WESTERN DIGITAL THAT THOUSANDS OF DIFFERENT WAVELENGTHS OF LIGHT
COULD BE RECORDED ON MEDIA (ACTUALY EACH WAVELENGTH IS A CHANNEL) HEAR WE ARE
DOWN THE ROAD AND WE GOT MAYBE TWO CHANNELS RED AND VIOLET
DUUUUUUUUUUUUUUUUU
PEOPLE JUST DONT LISTEN TO ME EVEN WHEN I PROVE IM RIGHT
Okay, I'll bite. I had many ideas, when I was young. As a practicing engineer, I can tell you that simply having an idea vs. actually being able to implement it in a reliable, cost-effective, and scalable manner are worlds apart. It might also be that chip-stacking and multi-spectral... whatever... simply weren't the most cost-effective ways to increase density, at the time (not to mention risk).
Put another way: Ideas are cheap. Implementation is hard. An idea is just the first step on the journey. The good news is that if you have a really good idea, there's a chance you can be one of the first to actually do it.
BTW, if you want chat buddies, try IRC. Or reddit. Or, maybe there are some usenet/google groups with a lot of traffic.