There is some speculation that the liberal democratic rumblings from Zelenski are what forced Putin to act. I have no illusions that a country with deeply rooted corruption issues like Ukraine can turn on a dime, but he was at least voicing support for the idea. If he managed to root out some of the corruption then Putin would lose the ability to puppet the state entirely, and that's a slippery slope to becoming part of Europe and being lost to Russia forever.