Putin will prevent Ukraine being turned into a "shiny example of the capitalist way of development", like West Germany and South Korea after WWII? That turning into a shop window-pane has patently failed without him, during last 4 years.
I'm just going to drop this here;
https://en.wikipedia.org/wiki/Human_Development_Index#2018_Human_Development_IndexFor some reason you think life in Russia is better than life in South Korea? You're dead wrong.
Russia lists 49th. South Korea lists 22nd.
Germany lists 5th.
I'm fairly certain if "capitalist" west took over Ukraine, the quality of life would increase dramatically for the average Ukrainian. The Iron Curtain nation states were an entire failure, just like the USSR.