If Leica had been held to the same standards as Nikon and Canon by the consumer this outcry would have happened years sooner.
You miss the point. Just who is this consumer you identify that would hold Leica to the same standards as Canikon? Such a consumer, presumably under no other compulsion than his or her own desire and choice, bought a Leica. I did. Others did. You did. We are the consumers, the standard holders, x-ray, not some generalized abstraction. And if you believe there should have a standard applied, and we are the standard bearers, what happened? Apparently we decided not to apply a Canon or Nikon-like standard and just kept buying & shooting Leica, for the most part. There were plenty of early indications of design and production issues with the M8 and M9, yet, despite the indications, we as a group continued to use and buy them. My own view is that Leica's product held such promise and pleasure in use that no one felt that Canikon standards were relevant. Our decisions to buy were not as rational as they needed to be. We lowered the bar collectively. We drank the Kool-Aid willingly.
No one compelled anyone to do so. It is a free market, meaning no one at Leica or anywhere else forced me or you or anyone to buy in the face of information that suggested there might be problems with the M9/MM series. No one held the proverbial gun to anyone's head. The one action that would have forced Leica to change its practices - refusing to buy - did not apparently occur in any significant way.
Perhaps we are on the cusp of a significant reduction in the number of people willing to buy Leica digital M's as a result of this latest wave of M9/MM issues. If so, it is less likely there will be continuing resources within Leica to make current M9/MM owners whole with regard to needed repairs, potentially a downward spiral especially if consumer reluctance extends to the M240.
So, Leica has what is most likely a rather short period of time to develop and execute a strategy that will cause a sufficient number of its existing customers to remain loyal and its new customers to press the buy button, if the sensor spot issue is as big as it may seem to be today. If Leica doesn't do so, it may have to mimic Zeiss and in the future make only lenses and scopes, leaving behind cameras. It'll be a poorer photographic world if such a scenario comes to pass, I expect. Let's hope Leica and its loyalists and enthusiasts cooperate patiently and find satisfaction.