I guess that I'm out of market for Chicago teams, but I live only 100 miles from Chicago and they're the main teams that are shown on TV.
I grew up on the old WGN and WFLD when they were standard with our cable company; this was pre- SportsChannel/Vision/FoxChicago/CSN. So, all Cubs and Sox games were on non-pay TV. Bears on CBS - the Colts were in Baltimore. No Bulls/'Hawks games on local TV of any significance until the Bulls championship years.
There was Fox Detroit later on for me (I live 6 miles north of CSN territory), but by that time, I was already a Sox fan.