That's simply not true - what makes you think Bitcoin cannot be regulated? At least businesses can easily be required to comply with regulations when it comes to Bitcoin. Mt. Gox for example does this right now with the AML regulations.
Granted, in theory maybe it could, but first it would require legal "approval" of bitcoin or other electronic currencies, and thats not likely going to happen
when the current legislation in most countries explicitly outlaws it. Let me quote from a link I published earlier:
Please stop spreading FUD - electronic currencies are very well regulated in the EU and I'm sure you cannot point to a single ruling
explicitly outlawing Bitcoin.
Also, from the very same link:
Particularly the reference to terrorism and what that allows under the patriot act, should worry anyone interested in bitcoin.
Yeah, terrorists were used as excuse for all kinds of bad laws, but at least the patriot act only covers the US. I'm not that worried though - Bitcoin is still below the radar of most politicians and it will be classified for practical reasons like taxation or basic anti money laundering regulations before anyone will bother to lobby for a legal attack with the war-on-terrorism club.
Moreover, bitcoin knows no national borders. Since its trivial, and potentially untraceable to send bitcoins abroad, legislation in any single country will likely have very limited, if any, effect on rampant speculation happening everywhere else.
True, but then again, there will simply never be that much Bitcoins available for speculation as there are Dollars or Euros now - see my post above.
Every sufficiently wealthy institution can reduce the price volatility of Bitcoin - so why not (central) banks or governments if they deemed it beneficial?
Because it could be extremely expensive. With fiat currency this is paid for by the taxpayer (or through inflation), who indirectly benefits from a stable currency. I dont see how you would solve this for a nationless currency. Unless you are fantasizing of a future where bitcoins become legal tender. Thats simply not going to happen, but even if it would, how much of the popular attributes of bitcoin would remain then?
I'm certainly not fantasizing about Bitcoins becoming legal tender - I was just pointing out that stabilizing Bitcoin could be done in principle by large institutions/governments. On the other hand I don't think volatility will be that much of an issue once Bitcoin is widely accepted. With enough volume, the price will stabilize.