Instagram? GoPro? iPhone? iPad? Square?
Instagram: A photo sharing site. These have been around since, I don't know, the beginning of the internet?
GoPro: We took a camera... and duct taped it to you! Wow. Innovative.
iPhone / iPad: Can't comment on it on this website. Too many religious connotations, not enough facts.
Square: omg! A way to insecurely store your personal banking data on your phone.
None of these things will be remembered in 20 years as significantly advancing the state of the art.
Google self-driving cars? Tesla? SpaceX? Drones from General Atomics Aeronautical Systems & Northrop Grumman?
Not in production, just became profitable after heavy government subidizing, follows on the heels of NASA who did all the heavy lifting, and things in the sky that are trying to kill us. Yeah... USA! USA! USA!
Gimme a break, man. Look at the Large Hadron Collider -- that could have been us, but we slashed the funding. A Nobel Prize? What's that compared to sleezy marketing and questionable accounting practices? Not much, that's what.
When I say new tech, I don't mean new business. America is great at cranking out variations on the same theme -- turn on the TV sometime. It's all just rehashes. And our technology sector is quickly becoming the same thing. It's all formulaic. There is no innovation, no risk taking, no entrepreneurship.
And that's my point. Every last example you've thrown up has been done before. Every. Last. One. Google car? DARPA robotics. SpaceX? NASA. Tesla? Tesla! And drones... dude, R/C airplanes aren't exactly cutting edge. We can mass produce them, yes, but it's not revolutionary... it's just taking what we already had and repurposing it.
They're nice pieces of kit, but they are not revolutionary, ground-breaking, paradigm-breaking things. We haven't had any of that in a good fifteen years now. Meanwhile, in the rest of the world... China's building dams that it takes all afternoon to walk across, entire cities and railway projects are springing up almost overnight, etc. In Europe, we've got the LHC churning out new physics.
Just about everywhere else you care to look besides the United States is showing signs of innovative new ways of doing things. The only thing we're good at... is business.