This is because the expectation of the socialisation of losses changes the behaviour of banks ex ante. Whether taxpayers should in fact bear losses, given a failure, is a different issue. That is determined by the costs of the bail-out and future costs of moral hazard, including the cost to future taxpayers.
Hence, in the midst of the big contraction of 2009, the central bank lowered its policy interest rate from 8.25 to 4.50 percent, and in 2013 it has further reduced it to 3.75 percent. In the last ten years, annual inflation has remained much lower than historical levels.