The crazy thing is that KPCB used to be in that set and then essentially voluntarily abdicated to do cleantech crap.
A16Z came from nowhere to join that set pretty much as they launched.
The others (greylock, sequoia, benchmark, accel, etc) are pretty static.
Interesting (and fairly recent) analysis of VCs from the point of view of a limited partner with investments in a range of VC firms: http://www.kauffman.org/uploadedFiles/vc-enemy-is-us-report.....
The mediocre return of VCs also says something about Silicon Valley. The idea of venture-capital funded startups as some exceptional economic engine is probably a myth. There is a lot of economic activity in Silicon Valley, no doubt, but you have to distinguish between expenditure of capital and return on capital. $20 million spent on a startup that never ends up making much revenue is not a net gain to the economy even if it shows up as economic activity. It's just expenditure of capital. So the success of specific VCs aside, the way to measure the economic contribution of VC-funded startups is by looking at the return on investment of the sector as a whole. And since that return isn't great, relative to blue-chip companies, that tells us one of two things about the sector:
Either: 1) VCs aren't great at the job of allocating capital to the right places; or 2) VCs are doing the best job they can, and its just inherently difficult to separate the winners from the losers when it comes to startups.
My gut feeling is that the answer is (2), which implies that the nature of the industry is such that it's so hard to separate the winners from the losers that the gain from the exceptional success of the winners is largely offset by the cost of funding the losers, which makes the economic returns from the industry as a whole unexceptional compared to the returns from traditional blue chip companies.
If SF VC funding were somehow constrained to $1b/yr, you'd get crazy percentage returns, since either only the top deals would get funded, or they'd be funded at super-favorable valuations (allowing more deals on the same money).
Seed and maybe A are not capital intensive, and are probably constrained by great ideas, founding teams, and early entrepreneurial employees. But I don't think VC is the right way to finance lower risk later stage stuff; the public markets could do a good job, and it would be a lot easier for risk-seeking investors (individuals or institutions) to get in and out of investments vs. being LPs in funds, and with lower overhead.
Turn it around, to cash out, is your objective an IPO or acquisition by another company?
Further, the sharp decrease in VC returns means less in the pockets of founders and early employees, and therefore less smart money in the game. Heck, you mentioned Elon Musk's Tesla and SpaceX, his money to get them going comes from PayPal, which was bought by eBay in 2002 (by then it was already getting very bad---granted, that was when the dot.com and post/911 crash was playing out---but SarBox is generally viewed as the last nail in the coffin).
1) Big non-US market growing up (probably in Asia, but possibly in cypherspace), with more rational regulations
2) Massive slowdown in tech progress (which one might argue is underway, but not as obvious; if it accelerates, it will be obvious)
3) Some way for PE to take over from public markets. Content to sit on revenue-generating companies throwing off cash. This already seems to be happening; I'm not sure what the tax consequences are, but I suspect they're smart/powerful enough to either financial engineer or politically engineer a solution.
All of them suck for different seasons. #2 is probably the worst for me personally.
Considering that climate change already kills 150,000 people per year [1], and that this rate will continue to (dramatically) increase, I think it's pretty rude for you to belittle the few good people who choose to fund cleantech (putting their fellow man above short-term economic "rationality").
Cleantech/greentech was originally defined as "non-energy", because energy had a long history of being investable. Energy efficiency and generation is a great sector for investment (I am so excited about Bloom Energy and Lightsail and FLiBe). I'm not at all excited about most of the ex-energy investments, and it appears most of those have failed to the extent that people consider energy part of cleantech now.
They were crap as investments, and most of the non-energy investments had bad science too, as well as being badly managed.
I'm totally pro-environment and pro-efficiency.
In the specific case of KPCB, they did a pretty horrible job with a lot of their portfolio. Missing Tesla and taking Fiskar was a great example. They did get Bloom. But I don't think they were approaching the sector with the kind of scientific and business rigor they used in the past for their other investments, and they were punished for it.
1) The 2% who make most of the returns is not consistent from year to year.
2) A VC who underperforms the market isn't a loser, because he's still collecting his paycheck (maybe with a smaller bonus than otherwise).
The combination of 1 and 2 is why the "98%" can keep raising capital, and is the open secret of the professional investment management industry. You can see the same trends in say hedge funds or other actively managed investment funds.