There were 5 winners. Your odds of winning were less than half a percent.
When submitting to a contest, you have no idea how many submissions there will be. With this many, and the processes around it, your submission WILL most likely be lost in the noise.
Indeed, many, many very good submissions will be lost in the noise.
At the same time, these kinds of videos take obscene amounts of time to prepare.
It's depressing to throw weeks of your heart and soul into something, only to have no one look at it.