That's unfortunate... there'll always be piracy, but it'd be terrible if you guys actually have to disband.
Do you know Stardew Valley? Apparently, a bunch of people who pirated it loved it so much they felt guilty and actually bought the game themselves — so there are goodness in people. I believe the ones who pirated will step up and donate if they genuinely love your game. Your game looks fantastic, so I don't doubt they do. I'm positive those who can actually buy your game will. I think the majority of the people who pirate are those who "can't buy it yet." Yet. And perhaps they will.
And, like the person said below, perhaps you can gain something from the situation. I apologize for my rudeness. With this, you're able to reach towards an audience who, regrettably, can't buy yet, but maybe will if they think you've put so much love into it. Some, if not most, people pirate not because they don't want to pay, but because they can't. It doesn't support your funds if they can't, either way. But it will perhaps help your funding if the people come back when they are able to or the people who can actually pay will do so out of guilt, goodwill, and/or love.
However, it is still a dreadful issue. Many companies have lost money from pirating itself. Hopefully, you can battle this problem in your future games, and I'm saying this with confidence — you will have future games.
I hope you can forgive those who pirated. Just know it means they loved your game too much.