A low share indicates that the audience market is very fragmented, which can also be the result of sub-national channels predominance, or a competitive market.
A share close to 100 indicates that the majority of the audience is served by 4 domestic channels. Based on additional parameters such as the size of population and main orientation of the channels, one may infer that there is room for more channels. The regulatory authority should monitor the sector to avoid undue concentration, which could be the result of a corporate merger or demand for new channels by a given BMO already controlling a large domestic audience.