Same could be said of captured t-90s, radar and EW systems…. Captured does not equal replication. If they had the capacity they would have T-14s swarming the battlefield and wouldn’t need drones and ammunition from Iran.
Putin may dream of a revived Soviet Union, but Russia is not.
Germany had the Russian invasion, napoleon his drive on Moscow, all began with great fanfare and success, both ended in failure because the decision making process was flawed.
Whether this was meant to be 3 day war or few weeks, can be argued. If anyone says this is all going according to the Russian plan, I would politely disagree
Why would they want to copy it, when they're easy as hell to destroy?