All governments - Conservative, Liberal, NDP, PQ, you name it - will have an element of "how much do we think we can get away with" in their conduct. There will be obfuscation, deflection and denial. A sense that they can ride it out.
Time in power feeds this sense, as does a fractured opposition (take today's QP as an example of an opposition that failed to really focus its questions and pen the government into the corner in which they were already standing).
But in the end, it is this attitude which ultimately brings down governments. And this is the point which should worry the government.
This issue and, more importantly, their handling of it has lead an increasing number of people - including elements of their base - to see them less as like the champions of change from 2006 and more like just another party. And when you are seen as just another party, the public will quickly realize that there is always someone else to which they can turn.