It can go into the billions, but it will be really hard and take a long time.

The community really has to get involved, even just simply mentioning Nem to others on other website would help a lot. Just mentioning for awareness, not advising people to buy into it, since it will be looked at as someone trying to sell you something for their own benefit and cause a lot or resentment.

But the community has to get behind it, including mentioning Nem in their Bitcoin talk signature. I see a lot of stakeholders, and many of them don't have a Nem signature.