It's fair to say Putin really didn't think the rest of the world would hit back so aggressively with sanctions. I guess he figured after the very weak response to the 2014 partial invasion of Ukraine that nobody really cared.
But will it all be enough to wake up the Russian people to fix the Putin problem once and for all, I just don't know. I hope it will, they don't deserve to suffer because of Putin, but it's necessary at the moment.