Actually the central planners did plan backups and alternatives for everything. With all its flaws even the SU was not so flawed to let total idiots make every economic decision.
Just think of Mig and Sukhoi, for a simple example. Or NPO-Saturn and Tumansky, if you prefer jet-engine manufacturers.
Just think of Mig and Sukhoi, for a simple example. Or NPO-Saturn and Tumansky, if you prefer jet-engine manufacturers.