Here's a thread from several months ago with a slightly different spin on why any altcoin will be outcompeted by a clone which uses the bitcoin blockchain:
https://bitcointalk.org/index.php?topic=367885.0;all
The short version is that the smartest devs and the most influential people in the cryptocurrency space are heavily invested in the bitcoin blockchain. They are also self-interested, and will prefer that altcoin-clones based on the bitcoin blockchain succeed rather than the original altcoin.
Thanks for the link. Indeed, bitcoin's shared ledger is where the value is stored. As long as we agree on the accuracy of this ledger, the value will be preserved.
I appreciate the depth of what this entails more each month.