Is room size considered when they design speakers?


Never see speakers saying best used in a 15 x 15 room.   
Also, why do speaker cabinets tend to be larger as they get more expensive? Not easy to answer. I know bigger handles bigger drivers but is this the only reason?
emergingsoul
I too have long wondered why manufacturers don't limit their sales by telling customers they only really work in certain limited situations. Also why would they charge more just because they need to use more material to make the product? Fascinating questions. Can't wait to hear if anyone is able to come up with the answer.
Like selling a +200hp car for 130km/hr speed limit? 
Many mini monitors are too expensive and many towers with multiple drivers are too economical.
Also some manufacturers claim use for their products in limited or larger space.
G
Maybe you could consider asking the specific manufacturer or respective dealer  the question. When I was looking to purchase Daedalus Audio speakers one of the things I discussed with Lou was my room size/layout and he went through which models would be better suited to my room. Likewise, when I purchased JM Reynaud speakers Bob at Amherest Audio and I also had that conversation going through JMR’s lineup.