a16z GPs Martin Casado and Matt Bornstein on the trait Cursor and Elon share and why it makes them a great fit: Martin: "Probably the greatest strength of the company is that once they made a decision, it doesn't matter how hard that was, whether it's deciding not to enter a market or deciding to be very limited in what they're doing, they follow through." "Kudos to them for actually having the courage and the tenacity for these tough decisions." Matt: "Which is sort of an Elon-ish trait…