Non profit doesn't mean you survive on donations. Non profit can still charge money to keep the lights on. If you have 2M users, charging $0.50/year for use can still get you $1M to run your business.

Edit: I think the comment was taken quite literally. The point I was trying to make was that the user base exists, monetization for profit is definitely hard, but monetization for keeping the lights on can work. You could try a flat fee for all users, you could do seasonal exclusive contents to support the platform, you could try selling merch, you could literally put a banner annually like Wikipedia does etc. The point being, if you have 2M users and you provide enough value, there are ways to make it work. Donations unfortunately don’t work, because it’s not top of mind for people and people need a little pushing.