In Chicago, I don't see for the time being first run syndicated programming going away on the big 4 stations. WBBM-TV (CBS) hasn't had a 4pm newscast in many years, because they can't compete with WLS-TV & WMAQ-TV in that timeslot. So in that timeslot, they air Judge Judy. Entertainment Tonight is carried around 6:30pm on the same station. Queen Latifah is on at 2pm, & Dr Phil at 3pm (WCIU, the secondary affiliate carries the previous day's program at 9am). They have only a 5 & 6pm newscasts, each only a half hour.
WMAQ-TV, their only network programs during the day are Today (all 4 hours) & Days of our Lives. Extra is on at 4pm & Access Hollywood at 6:30pm. Meredith Vieira is on at 1pm, Steve Harvey at 2pm, & Ellen DeGeneres at 3pm.
WLS-TV outbidded WGN-TV for 2 programs, with one back in 2013, & the other one this year. Live with Kelly & Michael is on at 9am, which moved to this station last season, forcing Windy City Live to move to 11am, resulting in the 11am news to be dropped (so far has worked against WLS-TV on that part, because WGN-TV's Midday News shot up in ratings when that happened). The same station manager that made sure Live would end up on WLS-TV also outbidded WGN-TV for Rachel Ray, & is now on at 1pm on this station this season. Only time will tell if this works in WLS-TV's favor, as it did not work in WBBM-TV's favor several years back, carrying Rachel Ray in the afternoon. This station manager is practically trying to copy the other ABC O&O stations in what they carry, & might not work in Chicago. Inside Edition moved back to 3pm & Jeopardy back to 3:30pm slot, after ABC's attempt to make Katie the new Oprah flopped (in this case, corporate signed all 8 of their station to carry her show, & force other shows out of the 3pm hour slot). Wheel of Fortune is on 6:30 pm. Local news is on at 4pm for an hour, 5 & 6pm for a half hour each.
WGN-TV doesn't have much in the way of daytime syndicated programming these days (most is off-network syndicated), but Maury is their only show left, & the main show airs at 1pm, with a repeat at 3pm. Tribune is already talking about not renewing their affiliation agreements after the 2016 season with NBC Universal, that Maury might be dropped. I don't know what they'll add. When they lost Live with Kelly & Michael, they expanded the morning news from 4 - 9am - 10am. I don't know what's on at 10, which was former home to Rachel Ray, where the show had worked well, in the morning.
For WFLD, their only network programming is in the 7 - 9pm timeslot, giving them plenty of room to add programming. So they need the syndicated programming. They have news at noon & 9pm, besides their normal morning news.
WCIU is independent, & need syndicated programming to fill out their broadcast day, or we'd see infomercials most of the time.
WPWR-TV is the same way, except for 7 - 9pm, they need syndicated programming.