There are numerous conservative Muslim movements. The Iranian Revolution was certainly not produced by Wahabis. The Deobandi movement, with its numerous offshoots, is not really Wahabi, despite some similarities. There are even Islamic movements like Dawat-e-Islami that could be seen as vehemently opposed to Wahabism that are very conservative.

Saudi Arabia may be pumping money into the "Wahabi cause" but it doesn't explain the whole picture.