The only reason this idea is even being entertained right now is because oil prices are so low. As soon as the oil producers are finished crushing this round of alternative energy companies oil prices will go back up and Boom won't sound so good.
Sure, that was the only ever Concorde crash, but then they really didn't fly very much compared with conventional aircraft. There are individual commercial aircraft that logged around as many flight cycles as the entire Concorde programme without incident.
But afaik the main culprit in the crash was a piece of titanium that fell off from another airplane and was left on the runway. This metal-piece cut into the tyre and caused an explosion.
You can think of lots of reasons why, but it mainly boils down to this: VCs are hired to make bets within an asset class (startups) and not outside that asset class. Institutional investors (upstream of VCs) have other managers to do commodities etc.
Also, at least in theory, the market price of oil takes all info into account. If the VCs could really predict the price of oil in 3-5 years, they should probably be trading that alpha instead of investing in VC.
That doesn't mean that the investment isn't expected to be hurt (or wiped out completely) should the price of oil rise, it just means that a competent investor would have looked at that possibility and decided that the investment was still worthwhile.
The comment I was responding to IMO assumed flippancy on the part of investors and implied that they would be surprised by an increase in oil. That's absurd.