Is that for sure the Delle Alpi and not Communale?
33,000 is not the end of the world. Think about it , who cares how many seats are there. If juve makes the most money out of TV etc, then it doesn't matter.
Now imagine :
all the hotels, malls, theme park around

making it the best place to visit
most modern stadium there is
very close seats to the pitch
full stadium every match
Most intimidating stadium in the world
Now do you really care about the number of spectators ? Just imagine how it will look on TV. Also, 33,000 sests there probably means a grand total of 40,000 which is the rough estimate, because Napoli for instance has 72,000 i think and it says 65,000 . San Siro too has 3000 less listed I think... probably means for security reasons or rather, they're planning to field only 33 K spectators or something, dunno.