As a rule, the only thing that can kill a good _ecosystem_ is the _ecosystem_ itself
Edit: We live in a democracy. If there is something that stands to significantly harm us, then we should (and can) do something about it. A recent example would be SOPA.
The biggest threat we face is not from Washington, it's ourselves. If we become so torn-apart that forces from Washington can destroy us, it's our fault.
It's rather easy to focus on problems being caused from an external force, but there are often larger and more dangerous threats internally. That brings up back to the startup quote, it's easy for a startup to focus on competitors (external threat) instead of working on their own product (which is really the biggest thing that will make or break them).
I definitely see the similarities and would agree with it. Nearly every successful entrepreneur will talk at length about the incredible importance of company culture on success (as that culture in turn permeates through the product, customer service, hiring process etc). I don't see why the same principles would become invalid at the slightly higher level of startup ecosystem.
It's plausible, but a corporate ecosystem is a lot different than a corporation. For example, the utility functions are different, the role and authority of leadership, the risk involved for each participant. Actually, it's quite a different beast.
Plus, I can think of plenty of ways external influences COULD kill the startup ecosystem. Congress could pass laws that make it much harder to start companies. Developers could figure out that the startup value proposition is not that great if you're not a founder. The market for internet ads could dry up (a significant risk to many startup business models). Big companies could develop techniques to quickly iterate on products rather than ceding ground to more agile startups. Laws could change that make it more expensive to acquire startups. Other industries could be created that make startups less enticing to young people. Taxes and security laws could change in a way that makes it much harder to distribute equity to employees.
Any of these things could kill the startup ecosystem depending on the magnitude of the change, and probably a lot of other stuff I'm not even thinking about. The idea that the ecosystem could kill itself also seems pretty preposterous to me. There are parts of the country where there isn't much of an ecosystem, but startups still exist. Startups aren't created because of an ecosystem, but because it is financially and economically advantageous to do so for some people.
Yeah, overall this view that the ecosystem is invulnerable from outside pressures and highly vulnerable to interior ones strikes me as fairly naive.
We don't live in anything close to democracy. It's hard for a populous to change a corrupt system when all the cards are stacked against the greater public.
Silicon Valley is not the greater public, it is a collection of very talented, motivated, rich people. It could be very influential in Washington, but until recently has chosen to avoid it instead.
Not shitty and unethical per se, but any behavior that compromises the value function of a given ecosystem will cause regulators to step in, in an attempt to correct it.