For myself, Adcc 13 was great because we got to see a lot of match-ups and finishes. There were hardly any pauses from the refs.
For the anti-pullers, you got to see a lot of stand-up fighting, reaping, and heel-hooks. No advantages. Opposite to the Ibjjf.
Also, I believe ADCC is not for the spectator, it is a tournament for the competitor. They get to travel expenses paid, large cash rewards, and the prestige. They do not care for attendance or streaming or growing submission wrestling. They are not looking for profit. Its all for the competitor.
The whole part about expenses being paid for the competitor is not really true for most of them. One of the coaches who flew to China told me the only guys that got 100% all expenses paid for were the ones in the superfights. Other than that, what got covered varied, but it was not 100% for anyone else.