Comcast is in the TV business, selling you to the premium programming providers.
Don't forget, Comcast owns 100% of NBC and a large portion of cable TV channels.
They're also in the movie business; as they own a number of studios as a result of Universal ownership
They're also in the sports business, as CSN has an unholy amount of agreements and prior to the agreement with the FCC over buying NBC/Universal, they were distributing them by fiber. Why? They have to negotiate carriage if it's uplinked by satellite. (FCC may have changed this, I haven't kept up.)
They own a chunk of Hulu.
I can't remember the unholy list of other things they own.
I change between cable & Verizon dsl or fios depending on price.
I don't believe you. When you subscribe to FiOS; they disconnect your copper and have no way of going back to it. It is *extremely* difficult to keep copper unless you are a business, or have some major legitimate reason for keeping copper. In which case; they will charge you for an extra line.