Not necessarily. When Lloyds bailed out the Halifax in 2008 they probably thought it was a good buy, until the problems started surfacing.

You're taking a fairly decent risk taking over a bank with only a weekend to do due diligence.

And ultimately this needs to be sorted. The losers are the share holders of a collapsed bank. Which is as it should be. And I don't think they were poor, although they might be now.