Yeah that's possible, but the influx of money after will help stabilize Ukraine like the Marshall plan. South Korea after the Korean War and Europe after WW2 show it's possible to avoid a full on collapse of society if you give people funds, hope and a plan.

The 90's was a collapse because the entire system collapsed into total anarchy after the internal rot reached the tipping point. No one knew who to trust or how to make things work.

Ukraine has friends, access to Europe, access to credit, easy access to the internet and information, a charismatic leader and a population that is motivated to build back better.

It's not guaranteed of course, but corruption by definition involves stealing from the many to benefit the few. When the many are trained, disciplined and motivated it's a lot harder to do that.