From the commercial portrait studio perspective, the proliferation of camera phones, cheap digital cameras and computer programs to enhance them, is decidedly not the same as the era of the Kodak Brownie being introduced.
The quality and ease of use has actually turned the commercial portrait studio on its head due to the acceptability of the photography and prints that is attainable with these new cameras and the number of people who have them. Add to that is the fashionable style of informality, and the recession, and you have a perfect storm that professional studios are now dealing with.
With regard to the "fine art print", it wasn't long ago that a "giclee" print was an interesting fine art selling tool. Now perhaps darkroom prints will feel a resurgence because it's "different" but in reality the consumer probably can't tell the difference anyway. A sharp dealer could tell them it was achieved with fairy dust and they would believe it.
Top collectors have and always will be familiar with darkroom processes and seek these out but like I said, most people could not tell the difference between a digital or a darkroom print.