At this point, Helium 3 is worth about as much as crude oil was four hundred years ago ("Great. Look at this stinking crap. Now we have to dig for water someplace else.")

We don't even have a working fusion process for the easy combinations, like deuterium-tritium, much less for more difficult combinations like deuterium-Helium 3.

The He3 on the Moon may be worth a lot someday, along with a number of other interesting industrial ideas. But it isn't now. You want a near-term money-making market for the Moon, it's going to be tourism, and it's not going to really be viable except for "stunt" trips until we have low-cost earth orbit operations.