Of course it's not uniform. The number of dollars handed to any given person each tick is a random variable drawn from some distribution (too tired to think of which right now). An individual's final worth will probably be selected from some sort of Gaussian, due to the trials being repeated and summed.
Question is, why did they have to hide the solution in a video? Are we allergic to static images and written text now?
I'm usually opposed to video evidence, but in this case, I think the video was an especially good means of illustrating the aggregation of resources to the right in a way that a series of static images would not have captured.
A d3 animation might have done the job just as effectively, but depending on the author's skills, might have taken a very long time to create, comparatively.
Question is, why did they have to hide the solution in a video? Are we allergic to static images and written text now?