WW is worst with camping because it takes longest for the income to afford best stuff at 200 and this game is the easiest. I am a level 50 with 4885K income and 271K upkeep. I don't even bother with the ROI on this game.
Lol old post of myself.
I still don't bother with ROI on this game and I am a level 221 now with 48545K income and 2,2M upkeep.