I get the impression that this thread is suffering from an injection of the perverted mindset that suggests that "professional" photographers have some sort of "right" to be able to earn a living from their occupation. And that they object because the world has changed and there is no longer much of a market for their mediocrity.
The great driving forces of the art and craft of photography have always been in the hands of the genuine amateur who were not encumbered by crassly materialistic considerations such as income, profits, client opinions, client demands, cost/benefit analyses, etc., etc., etc.
Alongside those mainstream photographic activities, there was still space for a few exceptionally talented "professionals" to make a living. We may have secretly despised them for prostituting their craft in the pursuit of filthy lucre (or we may not - after all, it did not concern us). Now, however, we seem to be assailed on all sides by girning, moaning, malcontents who complain that a few amateurs are taking away their livelihoods by producing (as they always did) better quality art at no cost to the consumer.
So, please, if "professionals" do find their "profession" threatened in the 21st Century, then so be it. Many other old trades have become completely redundant and buried in the mists of history. Is it not time for "pro-photographers" to let go and accept a substantial downsizing of their realm. There will always be a commercial need for the very best - but that may be a relatively small proportion of the current cadre of pretenders.
This thread began with the question, "Why is the camera industry in the dumper?" that has nothing to do with professional photography. The industry always has been driven - and always will be - by the amateurs who are right at the cutting edge of technological and artistic advancement.