In general I think the west tends to underestimate how frail a young democracy is.
Western-style Democracy isn't something that spontaneously happens when a despot is removed. It takes a long-ass time for the institutions to establish legitimacy, and when installed in an environment when there's large inequalities from the get-go, things may change, but they will also stay the same.
Manufacturing prosperity through something like the Marshall plan is one way to actually let things settle in the right way.