Ask HN: Why doesn't Angellist incorporate itself?

Would it be feasibly possible for Angellist to somehow make a legal entity of itself as an investment consortium of which investor members became shareholders? The online Angellist platform would still be open to all interested but any actual investing done would go through the entity (Much like a Berkshire Hathaway house), and now that they have gone global, foreign start-up founding would be far easier by simply setting up foreign subsidiaries or branches.