Why is the show biased?

Such a basic question, but I stil don't get it. Their motive is to attract viewers, and make profit. Then why do they eliminate contestants that people like before the ones that the public hates? Why drag Eisha along so far? I know she's channel's face and all, but why prefer just one girl over millions of fans of the show? Digvijay brought a lot of fans who tuned in for him, but evicting him in that manner took all of them away. Why can't they just be fair, and give the audience what it wants since it would benefit them too. They would get high TRPs, and people would enjoy a good show. Why go out of their way to do something that would only garner distrust and negativity towards the show?