Except that market economy is not just one corporation, but essentially infinite number of corporations. Some of them are guaranteed to make right decisions. The process is also self-correcting, as corporations which fail to react to demand fail, while others replace them.
The problem stems from socialists thinking essentially as you just said: treating it as one giant corporation instead of myriad smaller ones. Just as capitalists have necessarily yielded power to their corporate technostructure, so should the socialists have yielded power to theirs.
Blaming everything on "poor management" is tried excuse of socialists, but in reality you'd need superhumans with powers of divination in government, if you want them to run a command economy and react remotely as well to demands of populace as market economies do.
If you go into it expecting all decisions to be made at the top, then yes. But mature corporations do not function this way, and Soviet firms were never allowed to fully "mature" with regards to the origins of power within themselves.
It is like selling that if you found some bright enough people, they could run the whole evolution and preserve ecological balance while they are at it - without this natural selection thing...
But the runners of Western corporations are not geniuses, they are normal individuals with areas of specialization that compliment one another to allow complex decisions to be made. It seems all to common to assume that Western and socialist firms operated differently, when in fact they were structured in a nearly-identical manner. I hinted before at the parallel between Soviet firms and certain underperforming Western firms: to use Ford Motor Co. as an example, Henry Ford insisted on maintaining absolute control over all aspects of his corporation, right up to his death. He fought tooth and nail against the turning over of any meaningful decision-making to committes, and his company suffered for it. Upon his death, the technostructure reclaimed its decision-making power, and the company rebounded. Likewise, the Soviet firm was essentially denied the level of decision-making that only committees of specialists can make adequately, and so it suffered in kind, just like FMC did. It is, therefore, appropriate to assume that if the power in Soviet firms were deferred to the technostructure, then they would have performed much better, since this is the trend seen in mature Western corporations. But that would mean overturning the doctrine that the state and party, who rules on behalf the people and claims its Command Economy prerogative from such, which would have essentially destroyed the last vestige of socialism, actual soviets only appearing intermittently in Comintern history.
None of this applies, however, to what would normally be a small, private business, like a local restaurant, general store, supermarket, or farm, since those operate outside this paradigm, and all of which were
also included (to my knowledge) in socialist economic planning.
And now we're doing just what I was hoping we wouldn't.