In 2007, significant ownership changes occurred in Canada's broadcast television industry, involving nearly every network and television system. In addition to the shuffling of network affiliations and mergers involving various networks, several new television stations and rebroadcast transmitters also signed on the air.
In 2006, following the death of longtime chairman Allan Waters, CHUM Limited decided to cease operations and sell its broadcasting assets to a willing bidder. Bell Globemedia (later CTVglobemedia, now Bell Media) announced a $1.7 billion takeover offer for CHUM on July 12 of that year.
Bell Globemedia initially intended to retain CHUM's Citytv television system and its five large-market stations, as well as the company's numerous specialty channels; Bell would also sell off the smaller-market A-Channel stations along with several specialty channels.Rogers Communications originally placed a bid to purchase the A-Channel stations; CKX-TV (channel 5) in Brandon, Manitoba; Alberta educational station Access; and specialty channels SexTV and Canadian Learning Television.
However, the Canadian Radio-television and Telecommunications Commission (CRTC) denied CTV's acquisition of the Citytv stations, as all five stations – CITY-TV (channel 57) in Toronto, CKVU-TV (channel 10) in Vancouver, CKEM-TV (channel 51) in Edmonton, CKAL-TV (channel 5) in Calgary and CHMI-TV (channel 13) in Portage la Prairie-Winnipeg – were based in markets where CTV already maintained owned-and-operated stations (O&O), and therefore CTV's retention of Citytv would have violated a provision in the Commission's media ownership limits, which bar broadcasters from owning two English-language television stations in major metropolitan areas. CTV was, however, allowed to retain control of the A-Channel stations (a few of the A-Channel stations were based in cities adjacent to metropolitan areas such as Victoria, British Columbia; London and Barrie, Ontario; CRTC rules permit English-language commercial twinsticks in major markets provided that the stations have differing cities of license) and all of CHUM's specialty channels.