As for point three, true, but what good is a ledger of tx's if the whole thing is obscured as to origin?
Very good:
Monero presentation, Coinfest Estonia 2015 (page 3, especially latest point on miners censoring)
A similar concern with Monero (and any PoW coin) is mining centralization: if an entity can control the 2 or 3 largest mining pools, then the entire network can be compromised. It's a problem that definitely will become an issue in the future if not addressed. Again, I think this is fundamental design issue with the winner-take-all approach to block rewards. I don't have a solution
, especially the "decentralisation" section
As a rule, that secure company becomes corrupted through force or greed or subversion of some kind, sooner or later.
Satoshi on 17th January 2009:
You know, I think there were a lot more people interested in the 90's, but after more than a decade of failed Trusted Third Party based systems (Digicash, etc), they see it as a lost cause. I hope they can make the distinction that this is the first time I know of that we're trying a non-trust-based system.
