Often, the founders are permitted to embezzle the last 5-10% of the capital by walk away investors.
Sometimes, the founders own and profit from vendors to their venture, which dies.
Sometimes, a tiny, viable business is started within the venture, whose main business plan fails. The little business survives and feeds the founder and a few cronies.
Sometimes, the founder goes back to her lucrative university professorship which she was "on leave" from.
The founders never get hurt.