Any successful replacement of the Bitcoin block chain will forever undermine the credibility of any successor. How is an investor to know that it won't happen again?
Rebooting now may benefit a few thousand early adopters. What happens when hundreds of millions use Bitcoin 2? They'll be just as jealous and envious of you as you are of others. Given the precedent you want to set, how will you argue against yet another reboot?
Perhaps I haven't adequately explained my proposal. I do not suggest "rebooting" the chain in the sense of persuading everyone to stop working on it. Maybe "the market" will persuade people to abandon the 2009 chain, but that could happen for any number of reasons beyond competition from a similar currency. Frankly, I consider even this unlikely. I don't think anything can drive the value of Nakamoto/2009 BTC to zero in the next decade, and I am not about to short BTC.
If your best counterargument is "united we stand, divided we fall", aren't you at least a bit guilty of hiding the fundamentals from newcomers and non-technical users?
To ME, the value of BTC is running into a limit related to the cost of starting a competing chain. Therefore, I am less likely to buy Nakamoto/2009 BTC at going prices. I simply want to find other people who feel the same way. If there are no such people, I will shrug it off and invest as reason dictates. If there are many, well, our misgivings are collectively depressing the value of BTC, so wouldn't you like to offer us an alternative in the hope that the Bitcoin concept succeeds?