Proof points: 1. Tencent QQ is a Chinese social network for games. It's essentially Facebook+Zynga combined. Many of the top games on Facebook are ports of popular Chinese games, e.g., the farming genre. Tencent has been around for 12 years and did over $1Bn in revenue in 2009, representing a 61% increase in profits.
2. Over 500MM people use Facebook every month. That demand doesn't just disappear. The only way Facebook is going to lose is if someone comes along and gives people something better to do with their time.
3. Facebook has their pick of engineering talent in Silicon Valley. If you're an engineer looking ad a mid-sized startup, Facebook is the best place to work, hands down. Look at their open source projects (e.g., Cassandra.). How about their PHP compiler? Or their numerous patches to memcache? It's clearly an engineering-driven company.
4. Just because you think something is frivolous doesn't mean it isn't valuable. Was Atari frivolous? Electronic Arts? EA, obviously, is still around and immensely profitable. Moreover, the same VC that backed those companies also backed Apple, Oracle, and NVIDIA.
There are plenty of startups working on problems lower on the stack. One can innovate at any level -- why is Minecraft any less valuable than a video game that pushes the limits of modern 3D algorithms?
Was Facebook less innovative than PayPal? Oracle?
Personally, I think the attitude you show in your response is a defense mechanism. You feel like you're somehow "above" Facebook and therefore their success isn't valid.
But the the frontier expands, and the very high integration which formerly proved such a huge advantage is now a source of inertia.
How many of us here have signed onto CompuServe or AOL lately? How many competitors did they leave dying in the dirt? They linger on, but as strange undead shadows of themselves. Apparently a few people are still willing to pay $199/year to sustain that pioneer feeling, but I doubt I'm missing anything: http://webcenters.netscape.compuserve.com/menu/
Facebook and Twitter are less about entertainment and more about communication. Facebook lets me communicate and "share" with the people who've come and gone in my life in a way that's never been possible. And for those who use it well, Twitter is an invaluable source of relevant up-to-date information, straight from the mouths of the experts/authorities that you respect. As far as transforming the world goes, communication is a MAJOR area to innovate in, because it tends to bring people close together who were once far away and alien. This has profound effects on culture, government, etc (see: telegraph, radio, telephone, television, etc).
The way I see it, the web is a naturally advantageous platform for innovation in these industries and more, and now it's finally maturing. The startups blowing up today are merely the ones taking advantage of this fact.
[1] http://gigaom.com/2010/02/17/average-social-gamer-is-a-43-ye...
My point stands: their products decrease productivity, not increase it. That it's successful is great but it's not "innovative" in the stronger sense we're talking about here.
Zynga games have never really been played on a scale such as this before, leveraging social reciprocation as a way to entice the user to keep playing. I think if they're smart about it, they can find new game mechanics on this scale that wasn't available to games before.
I know facebook and twitter regularly release open source software for infrastructure. Thrift from facebook (and I think Cassandra). And FlockDB from Twitter, if I'm not mistaken. Every other startup's boats rise due to these companies dealing with silly things.
Not that classic Silicon Valley necessarily got the balance right, either: Xerox PARC is the canonical example of a place that was closer to 95% R&D, and 5% shipping profitable products based on that tech. But it seems at least possible that many companies are now swung towards the opposite side: 5% on inventing new tech, and 95% focus on productifying/monetizing existing tech by making nicely polished implementations, pushing it into new market segments, etc.
That might also be fine so long as there's a bunch of unexploited tech lying out there, waiting for someone to turn it into profitable products, but who's going to keep replenishing those stocks of unexploited tech? Will that kind of R&D come exclusively from academic research and a few big industrial labs like MSR?
Basic tech is still there. I think it's hard to know where to look, because like I said elsewhere, things that significantly change our lives in the future start off looking like toys, and not all toys end up significantly changing our lives.
It only seems like we have no basic tech because we're either not looking there, or we're writing it off.