Does Mile High Comics leaving the convention mean that the San Diego Comic Con is shifting focus?

In a newsletter posted on their website titled “Mile High Comics Withdraws From San Diego Comic Con After 44 Years,” Mile High Comics president Chuck Rozanski announced that the gigantic retailer will not be attending San Diego Comic Con, ending a relationship that has lasted nearly half a century.

Source: Mile High Comics Withdraws From San Diego Comic-Con After 44 Years