How do you think VC firms work? There is no "own money". Their entire business is getting rich people, institutional investors, governments, pension funds, endowments etc. to give them money and investing that money in startups, keeping a cut for themselves.
Why do you ask me? One of the top comments assumes that it would be crazy to assume recklessness on the part of a16z. I point out that they are insulated from the consequences on multiple levels.
None? I think almost all VC partners are vested in their funds. They have skin in the game. Yes, they do profit from managing the money of others, but I think it's rare for them not to be putting their own money on the line.