[Spike]

The downfall of Big Brother was BB7
That was the point in became a very different show to earlier series, it used loads of twists and I think fans felt let down by controversies of the whole golden ticket twist and Nikki going back in
At the time BB7 was brilliant but in the long term its not been so good for the show
Also the race row and all female launch of BB8 would have also let some fans down. So before the second day of BB8 it was obvious fans had been lost and it the series wouldn't be so good as most ideas had already been used