Zee as a channel has a standard habituated 9pm audience who have been tuning to this channel for several years irrespective of which show gets aired at that time slot. If you are not aware Zee has been 9pm slot leader for long even before KKB got started in 2014. 😛
Other than that, KKB also has built its own brand and is watched by many Indian households out of habit during the last 3 yrs and also by some Tisha/Abhigya fandom, irrespective of how the overall story flow keeps looking like week on week. You may not be aware but KKB has been the most neglected Balaji show last 2 years in terms of focus and creativity by Ekta. And in 2017 right from Feb onwards only 5 new promos got aired so far, that's not even a monthly average. And there are people like me who take temporary breaks from watching KKB in between when episodes turn boring or unconvincing or low quality or not entertaining enough.😳Don't know who gave you such a wrong illusion that if KKB stops on Zee at 9pm slot then other TV shows airing on other channels will get TRP's. This is out-rightly ridiculous. Which ever new show replaces KKB at 9pm slot on Zee may also get some good openings on TRP charts, even if it doesn't necessarily be a no.1 show and its a fact.Suggest you to visit BARC site and pls read how TRP's get calculated, what scientific mechanisms are used and who contributes towards ratings. People like you and me on India forums or on social media or on online portals may not be TRP contributing audience for hundreds of Hindi TV shows that get telecast on so many different entertainment channels at different time slots and on different days. So pls get your facts right.😛One can raise petitions against fictional TV serials if there is seriously objectionable content that is not permitted for viewing at a prime time slot with families or something that's outrageously against Indian law. There are certain criteria listed for raising petitions to authorized agencies. Just because a TV show's content is boring, repetitive, recycled, or villains get screen space or because TRP's are high - these can't become basis to ban any Indian TV show without quoting appropriate episodes, scenes, and content that has been aired during last 7 days by giving justifiable reasons. 😆