Two answers:
a)
Betteridge's law of headlines
b) It depends. Many speakers are often created to cost - ie: maximize profits. See the vast majority of Klipsch and Martin Logan speakers. While others fall into two categories and the goal for both is to maximize audio quality. First, one is built to a price, maximizing performance as possible (limited by price) and accepting some compromises (Kali Audio) and the latter isn't limited by price nor compromises (many of RBH, TAD, ATC, and PMC, etc..)
New developments in math, physics, measuring equipment, and computing, allow for much lower investment to maximize new speaker performance, but it's NOY a hard rule. Like I said some new speakers are simply built to price without much actual sound development - just pick some cheap components, slap a cheap piano finish, and call it a day.