two-sided market balance when media consumers choose only one platform (single-
homing consumers—SHCs). The competitive bottleneck induced from single-homing
begets several puzzles for the positive analysis and strong conclusions for the normative
analysis. These are addressed through considering the possibility that (some) consumers
multi-home (
Section 2.4). Multi-homing gives rise to incremental pricing of ads
whereby platforms can only charge for the extra value they deliver to (multi-homing)
advertisers. This leads to reluctance for platforms to deliver multi-homing consumers
(MHCs) due to their lower value.
Section 2.5 draws some implications for platform
content choice in both product specifications (short run) and overall product diversity