“…5 This paper does not undertake an ex-post evaluation of the effectiveness of ex-ante remedies, as a substantial body of empirical economic literature already exists on this subject. SeeWeinberg (2008) andStöhr (2021) for empirical overviews on the price effects of horizontal mergers. Latest studies look at non-price effects, such as quality and variety; see for instanceArgentesi et al (2021).…”