Look long-term. What you should really hope is that miners that make insane profits, keep reinvesting to secure the network. I will do it as long as I can.
The security of the network also relies on strength in numbers / number of distributed nodes.
With a select few nodes doing all the work it's easier to target them for DDOS, theft, government confiscation, or even drone strike.
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
Some might laugh, but all they need to do is label you a terrorist, Bernard von NotHaus, the creator of the Liberty Dollar was labeled as a domestic terrorist by the FBI, and arrested, $7m gold/silver backing his money seized.
![Shocked](https://bitcointalk.org/Smileys/default/shocked.gif)
“
Attempts to undermine the legitimate currency of this country are simply a unique form of domestic terrorism,” U.S. Attorney Tompkins said in announcing the verdict. “While these forms of anti-government activities do not involve violence, they are every bit as insidious and
represent a clear and present danger to the economic stability of this country,” she added. “
We are determined to meet these threats through infiltration, disruption, and dismantling of organizations which seek to challenge the legitimacy of our democratic form of government.”
http://www.fbi.gov/charlotte/press-releases/2011/defendant-convicted-of-minting-his-own-currency