The Government will not allow a major consumer bank to go bust. Nor could it contemplate a full hnationalisation in the way it dealt with Northern Rock at the start of this year.
Depending on which measure you choose, HBOS is anything from five to 10 times the size of Northern Rock. That would just be too much for the nation's finances.
At the same time HBOS has Britain's biggest shareholder base. Following the stock market flotation of Halifax in 1997 when the former building society's members were all given free shares, there remain 2.1 million private investors in the bank.
They have already seen their shares lose 90 per cent of their value in the past 16 months. Even the 119p offer from Lloyds is better than the nil pence nationalisation would probably have produced.
There is even a glimmer of light in today's details with the news that the Treasury is keen for the expanded Lloyds to buy back the Government's £4 billion of preference shares as soon as it can. That in turn would allow the new "super retail bank" to restart paying dividends to those millions of shareholders. Previously City analysts had not expected dividends to restart until 2012 at the earliest.