[OliveMate]

Not a genius but I'd speculate that it's a mix of the following in the 2010s:

- Boom of small & lightweight HD cameras, your GoPros and the like.

- Proliferation of video editing tools – and more importantly skills – as internet-based video platforms grew more popular.

- Quadcopters (and other RC aircraft) became cheaper and more stable with each passing year.

Each of these democratised aerial photography – something you could only do if you hired an aircraft and souped-up camera to go with it, an insane expense. Then like any other technology, the more people use it, the more uses we find for it.