Well coming back to bose , I do admit that they sound good and do get the job done. The voice is not hollow and looks to be coming from a very large speaker. The use of paper cone is very well understood because bass produced with paper cones are def. better. Back in the days cerwin vega produced all their car woofers with paper cones and they were well above their competitors but durability was the question .. And soon they went bankrupt.
I guess bose uses small 5" mid drivers because of the long port design they use. If they were to use a bigger driver, then they would have to use a much bigger port displacement which would not be possible in a small unit.
Anyway, there are many brands which don't produce audiophile grade products , yet they sell in abundance example beats headphones , pioneer car audio systems etc.