We like to blame the West for the actions of dictators, but I wonder if a saner reading is that these things are generally inevitable. We wanted to "westernize"

We like to blame the West for the actions of dictators, but I wonder if a saner reading is that these things are generally inevitable. We wanted to "westernize" China by way of trade, and we probably succeeded to the extent that we could even if China remains communist. We sanctioned Belarus which probably would have become a dictatorship anyway. Similarly, I suspect your proposal to "make a deal with a dictator" will just result in that dictator declining his commitment on his deathbed (what does he have to lose? He's already gotten his lifelong dictatorship side of the deal). Ultimately, democracy isn't just a way of organizing politically, it requires a culture that values/expects/demands democracy. If people don't value or demand democracy, then perhaps no amount of sanctions or toppling dictators is going to result in a reasonably democratic government, but conversely sanctions and toppling dictators probably isn't worsening the democratic prospect either (contrary to anti-Western propaganda and criticism).