If Celebrity Big Brother was pulling in Young Sheldon numbers, it’d be a different story, but with viewership averaging on the lower end of 5 million, it’d be hard for CBS to justify airing the show multiple times a week when other shows could bring in greater numbers.
In short, there wouldn’t be a lot of space for CBS to air Celebrity Big Brother 3-5 times a week during a non-Olympic winter as those spots would be taken by shows expected to perform well in primetime.
Of course, as Julie Chen also expressed to EW, the Winter Olympics don’t come around every year.
In a normal year, CBS would already be rolling along with returns of its successful shows and midseason premieres hoping to make a splash with audiences.