Right, this makes sense. In the event there is a clearly malicious 'investor' who is trying to attack the network, what will happen in practice is probably very hard to predict. If the attacker gets wind that he's going to be forked out, he'll then try to sell everything back as fast as possible. But, if an attacker knew that being forked out would be a possibility, he wouldn't even try attacking this way to start with.
I'm liking DPOS more and more. Another thought:
Protocol-wise, DPOS does not consider 'individuals'. It just keeps a balance-sheet of addresses, how much they own, and what delegates they are voting for. However, since "community forks" are determined extrinsically, perhaps by downloading a modified version of the client, it now indeed matters more as to how many individuals collaborate regardless of their total stake. Does this make sense?
We seek the ability of humans to join groups of people under a set of rules they all support. That's why Bytemaster's vision of DACs grows from companies to communities to (maybe someday) countries that are joined by choice more than an accident of birth. This means that you can decide whether you want a community where voting is per person vs. per share. BitShares is modeled after collaboration based on pooled capital, where the votes are allocated based on what each individual has contributed to the capital pool (as Bytemaster outlined above). But a home owner's association might prefer to allocate it on a per residence basis. We like the ability to join a group with rules we can support. If those rules are changed by the majority, we like being able to leave.
Which brings up another point: any design that depends on assurances that some group of people can be prevented from collaborating, is a fragile design. Humans collaborate and compete. We collaborate
to compete.
Block chains are just a transparent way of keeping score.
Remember that famous quote from Milton Friedman? "Inflation is always and everywhere a monetary phenomenon."
I'm thinking up a fractured version of that quote: "Collaboration is always and everywhere a human phenomenon."
We shouldn't think of block chains as a way to change human behavior. It's just a way to transparently document what is happening. What difference does it make if 51% of the owners independently or collaboratively or conspiratorially decide to vote in a particular way? Do they not each have a right to base their actions on any combination of factors they choose?
A majority of shareholders of a traditional company can collaborate to change its by-laws.
A majority of shareholders of a crypto company can collaborate to change its software equivalent.
If they do so, the minority has the option to sell off. So the majority must tread lightly.
Let humans continue to compete and collaborate as they always have.
I think many of them will prefer to do so on a robotically honest playing field.