What made our small team choose BitBucket over GitHub was the consideration that having to pay for # repositories would force us (and about everyone) to organise code not based on development convenience, but on $ convenience, which means put everything in a few very big and messy repositories.

Good point. Also, before having 1 repository was a way to avoid higher bill. Now it'd require to have just 1 user which I doubt anyone will try to do.

Then again with git this isn't so much of a problem, if you aren't wanting to play the blame game this works quite well.