1) Objectives were a rapid decapitation strike, air supremacy, and major incursions on several fronts, grabbing several cities.
2) His own forces are getting drawn out and mauled. Ukranians are just not losing units at the same rate.
3) Either way, momentum matters and Russians don't have it.
That said, they do have a lot of fodder to throw at Ukraine.
It seems likely that Ukraine can defend themselves if they are very effectively supported by the West on many fronts, but otherwise the Bear will just slowly suffocate them even as it looses a lot of blood itself.
Every anyone with military experience sees that column they have to be salivating. Has there ever been a time in history when there has been several divisions of units just sitting there, out in the open, waiting to be attacked. My gosh.