someone (maybe you) did the numbers on the non-seasons fish tank bullshit and it basically showed a pretty even number between money spend and viewship. didn't matter how long the season or if it was an "all-star cast" or "a bunch of losers" the amount spent averaged out to about the same. meaning the only way to increase revenue would be to make the show even more popular. by starting slow they also can build up the fanbase too. its also why they basically had a notorious Big Brother cast member on and have been blatantly trying to get that audience this entire time, the more viewers mean the more likely people will be to spend money or pay for TTS.