The immense availability of financial instruments and VC makes investment in any mildly promising technology overshoot. There's nothing really mysterious about

The immense availability of financial instruments and VC makes investment in any mildly promising technology overshoot. There's nothing really mysterious about this, especially after the dot com bubble. Is the web useless? no, but there's a limit to the number of players doing the same things the same way successfully - because that's what hype does, make people focus in not just a technology but a particular way. 3d-printing, mobile apps, tablet devices, VR, cryptocurrency, 3D TV, Neural Networks (in the 70s, then again in the mid 80s, then in the late 90s, and now), you name it. These are perfectly applicable technologies that may or may not warrant the swings in investment they attract, but they are valid and defensible nonetheless. They may also be monetisable - not always useful stuff brings proportional profit in the market. And of course, there's also timing. The exact same idea may work years later in a different environment. But the only way to find out is to try, and maybe try too much at some point.