I don't promote government failure, I expect it. And my expectations are met fairly often. What I promote is the idea that more people share my expectations, so fewer people are harmed by government failure, and so we can stop this slide toward increasingly large portions of our lives being subject to the whims, interests, and prejudices of politicians.
I will concede that there's a problem, here. In the private sector failure leads to obsolescence (unless you happen to work for a portion of the private sector that politicians think should be preserved in spite of failure). When government fails, people like Dinauer and, well, the government claim it's a sign that we need more government. It's not that government did a poor job, or is a poor mechanism for addressing that particular problem, it's that there just wasn't enough government. Of course, the same people will point to what they call government success as, also, a good argument for more government.
It's a nifty trick. The right does it with national security. The fact that we haven't had a major terrorist attack since September 11, 2001 proves that the Bush administration's heavy-handed, high-security approach to fighting terrorism worked! But if we had suffered another attack, the same people would have been arguing that we need to surrender more of our civil liberties to the security state. Two sides. Same coin.