Rogers does: cable tv, ip phone over cable (ala Comcast in the US), cable internet (which IIRC it own the only coax last-mile lines in the areas where it is a monopoly -- I think that west Canada has a different cable monopoly), the only gsm carrier in Canada+, a chain of video rental stores that competes with Blockbuster Canada.

Bell does: phone, DSL++, and the only CDMA cell carrier in Canada+++.

+ At the time I was living in Canada, there were many smaller GSM players, but they had all been bought out by Rogers, so you largely just had different branded GSM services from the same provider. More recently there have been at least two new GSM players (Wind and Mobilicity) though I believe that their coverage area is mainly just the Greater Toronto Area. [Of note is that Bell and Rogers use the same 3G bands as AT&T does in the US and Wind/Mobilicity use the same 3G bands as T-Mobile does in the US.]

++ The last-mile DSL lines were being sold to 3rd-parties ISPs as well as Bell itself being an ISP on those lines. See me ascii-art diagram in the other thread.

+++ Similar to Rogers, IIRC there were a couple of smaller players that were bought out by Bell so that all of the CDMA carriers were under the Bell 'umbrella.'