Because I have to pay for private repos and teams however small they are (bitbucket private repos are free).

Also because I generally tend to prefer the silver (underdog) candidates like Pepsi, the Falcons or Hillary.

Github is a pretty decent product. It seems churlish to criticise it on the basis that it comes at a price.

Didn't GitHub update their pricing a couple months ago to make private repos free too?

From a 10-second look at their website, the answer is no.