It's true that the US hasn't changed its Middle-East policies (although I'd argue that's the only way to eradicate Islamic terrorism), but it's important to note that bin Laden did not target the US due to its secularism, but for its foreign policy. He even said that if he wanted to attack a country just for being secular, he'd have attacked Sweden.

I don't think Bin Laden ever wanted to "convert" his "enemies", but rather to destroy or frighten them.

Considering the amount of money thrown into the Afghan pit (which still is a factor affecting the ability of Western countries to sustain periods of economic turmoil, and even to replenish their own arsenals -- see UK defence cuts) and the hysteric approach to public spaces since 2001, I'd say he's been fairly successful in his endeavours.

Which is not that surprising, to be fair. After all, he was originally trained by the CIA, and was backed by Saudi money and the Pakistani military.