James, the digital back has settings to use the level you need. Generally, about 45 meg gives you the superior resolution you need for an 11"x17" center spread. The real reason for the use of the view cameras is for composition to very tight layouts and parralax correction for the "straight parallel line" effect required for most types of industrial/commercial work.
The people who make all the cash are the producers. Wew don't do stand-alone photography at all, but rather do the photography for collateral materials and packaging which we completely produce (design, illustration, layout, copy, etc.).
A finished 16 pager printed in a quantity of 50,000 bills out at about $75,000.00.
That's "top shelf" work for a large automobile manufacturer or similar organization.
The downside is, it's not nearly as much fun to do images of, say the guts of an electrical circuit breaker than to do some of the stuff you've posted.
But in photography, art, music...most creative ventures, the fun stuff never pays well.
Regsrds,
Russ (sell out for the dough) Lay