Bitcoin was created to be a free network which can operate without the need for a third party, but so many people who hold bitcoin are not doing so because of the freedom or ease of access it offers, but rather because of the speculative value, and these people do not mind giving up their privacy and freedom for the ease that CEXes supposedly offers

This would not be happening anytime soon, you can even judge through the comments here on bitcointalk that majority of people are not ready to accept that centralized exchanges are an antithesis to what bitcoin was designed to be.