Firstly, as article 2 in the OP points out, the idea that all the rich bankers in London will disappear to Zurich is bobbins - it's just a way of trying to put pressure on the regulators by threatening to leave. Secondly, so if it was true, is it really so bad? Bankers get paid a lot, and there are plenty more people in this country or indeed abroad, who I'm sure would be more than happy to work for the salary alone, without a bonus.
Thirdly, and most importantly, how 'talented' do you think these people ae, let alone 'uniquely' so? These are people whose business collapsed due to their incompetence - if they were that good, their business woudn't need bailing out. The reality is they took unacceptable risks without fully calculating and/or caring about the consequences, because they knew the taxpayer would pick up the tab if it all went wrong.
As the Irish govt correctly pointed out, they can either pay what the hell bonuses they like - but go bust - or accept that they don't deserve any bonus due to their incompetence, and gratefully accept the help offered. At least they keep their jobs - most people who work for companies that go bust in the recession aren't that lucky.
For bankers' salries, I am sure you can find any number of bright enough people to do the work. They are not unique and certainly not irreplaceable. Just greedy.
For the record, I have a close friend who is an investment banker - he's quite bright, but not exceptionally so (2:1 in numerate subject from respectable uni - hardly unique) - he's just VERY motivated by money.