Cabasse also makes square/rectangular speakers. They may also have some patents on them so other companies cannot make similar ones.
nonsense. You cant patent a shape. Why hasnt anybody patented the rectangular box?
And of course the way they sound might not be to every one's liking, regardless of research, science or technology.
wrong again. The research shows it is the perfect shape. Speakers are there to reproduce what you play through them. They are not instruments. High end speaker companies know this.
I may be wrong, but I don't think anyone makes a round Sub Woofer (KEF did made one that looked like a car tire).
B&w had one but we are not talking about subwoofers we are talking about regular speakers