I think this misses the point entirely. It's their entire strategy, or lack of strategy that is in question. Small numbers of light vehicles entering towns they have not overcome...are then promptly destroyed by irregular Ukrainian forces often with improvised weapons. Seemingly trying to take large cities without first gaining and controlling ground and surrounding areas. Lack of attempts to destroy strategic infras…
I think the reason was, we just waltz into Kyev, get greeted as saviors and liberators, maybe shoot Zelenskyy and his circle in the head by mistake, or just make them disappear, install another friendly ruler (collaborator would be more appropriate, like Kadyrov in Chechnya) and Ukraine will be part of Russia within next few years, or end up as slave without any real autonomy like Belarus. If that's the case, industr…
Also, assuming any of the responsible thought about this beforehand at all (which IS an assumption), they probably expected further economic sanctions of SOME sort from invading. Rebuilding costs money. Rebuilding things like high-tech fighter aircraft costs truly ridiculous amounts of money. There were plenty of reasons they would have hoped to be able to do this all on a modest budget.