As for being similar, I'm not sure I would say they were, but maybe Alamy mean they are all the same type of image? You'd have to ask them about that though. Backgrounds can be created easily these days without any skill, and if not, downloaded from free sites. I doubt many people would use a stock agency like Alamy to pay money for such images. Alamy is mainly for editorial photos that could be used for news articles, magazines, presentations, etc.. I know that illustrations and vectors are also on Alamy but I don't rate the chances of someone selling many licenses on Alamy of that sort of im