Doug and Steve are too professional to engage in battle with such arguments. They cannot be fought on logic and fact, as so far, certain posters don't start with either of them (fact or logic).
Stating things as fact, doesn't make them so !. i.e. "We all know that the technological advances by 35mm DSLR cameras have reached .. " Who is WE ? what sample group did you use, where is the empirical evidence of such grandiose all encompassing statements. What you are really saying is YOU believe it is so, and some other people you've heard of say it is so, therefore it must be GLOBALLY so, in all markets, for all definitions of 'commercial' etc etc. Patently not so, otherwise there wouldn't be a market for all types of cameras, commercially.
Sorry, that is up there with "Grass is green, this bottle is green, therefore this bottle must be made from grass".
Strawman arguments at best: http://en.wikipedia.org/wiki/Straw_man
And as for the sentiment, well, that is up there with 'A Toyota corolla gets you from A to B, who needs a BMW, or even an Astin Martin".