True Early Adopters (capital E & A) don’t just buy things. They do things and think about things differently than most people. Early adopters adopt new behaviors and the seeds of cultural uprisings. Early adopters form strong opinions about new experiences and articulate them masterfully. Early adopters send strong signals to the rest of the population to either stay away or join the movement.
A lot of people buy new things nowadays. That's no longer as useful a distinction as it used to be.
I think early adoption is an openness to change. An aggressive pursuit of it, in fact, in the interest of happiness.