I was looking at this Wikipedia article, History of photography, and I wondered when commercial photography studios became common place and affordable for the average person.
According to the article, cameras became refined between 1851 and 1884. Photo quality became better and better and the equipment became more portable. Photographers like Mathew Brady documented historical events and took portrait photos of famous people. In the 1870's, photography studios were popping up all over. Even smaller towns like Tombstone AZ had a photography studio.
What I'm looking for that I couldn't locate on Wikipedia was the point at which photography studios and professional photography as a profession really took off. I'd assume it's during the time period I mentioned but were there certain events/people that led the way in this mass commercialization? What was the tipping point between it being something for inventors to tinker with vs. a popular money-making enterprise?
Basically, I'm looking for commercial/marketing innovation rather than technical innovation, a Jeff Bezos or Mark Zuckerberg rather than a Bill Gates or Steve Jobs.