Olympus is no more the leader in the mirrorless system camera market. According to a new BCNretail report during the first six months 2018 Canon is on top with 30,1% share over Olympus 27,7% share.
Still a mystery for me how such an incomplete system like the one that Canon has can overthrow all other mirrorless makers (Olympus-Panasonic-Fuji-Sony).