I don't think professional photographers are in danger yet. The guy was only able to succeed because of several factors: access to elections is open to everyone

I don't think professional photographers are in danger yet. The guy was only able to succeed because of several factors: access to elections is open to everyone (he probably doesn't even need to be close if using the right lens), it isn't too difficult to take a picture of someone speaking at a podium, and if the subject is putting any energy into speaking the photo will come out looking decent. Professional photographers on the other hand have to deal with open environments with varying lighting and subjects which requires a lot more skill. I think what he's doing is great. A creative commons is an absolute necessity in today's age. Imagine a blogger had to pay for each image they used; they wouldn't even be able to illustrate their subjects. Freely licensed content is also the lifeblood of Wikipedia, which doesn't allow images of living people under fair use. For things which can't accept amateur quality, professional work will always be available. It certainly says something about the profession if Trump's campaign is willing to choose amateur photographs over theirs: they're not selling themselves hard enough or networks are not worth as much as they used to be in today's digital age.