First of all I suspect that the ability to make decision without emotion is an impossibility. Every thought has with it a seed of emotion. However, as it has been said by someone much wiser than me, some thoughts are like words written on water, others like sand upon a beach with an incoming tide, and others have so much emotion that they are 'carved in rock.' It is these last which stay and influence our responses to any ideas and thoughts put to us. In other words, we're all conditioned.
Now we might be conditioned to be a quick decision maker who, once the decision is made, goes ahead without any recrimminations as to whether or not the decision and the action which follows is really was the right one. There is quite a lot of ego in this. "I am right; I come from experience and know what I'm talking about."
Then there are the procrastinators and vacillators. They might have quite deep emotional intelligence (sensitivity to their own feelings and those of others) but are unable to make a decision quickly because they know that there will be some winners and some losers and they don't wish to hurt anyone.
Between the two lie the majority of us. In the corporate world of today, and of the past, I suspect the quick decision makers who are able to take the more abstract view: "Okay, so 1,000 of our staff will be made redundant, but with the new technology the company will thrive and in three years we'll have recuited another 2,000 people."
Emotional intelligence? I'm not sure. What you call good business practice...probably yes. The shareholders would love this sort of guy a CEO. Is emotional intelligence important and savvy (why do you put the two together?) important in the corporate world. Of course it is. But do we get enough of it? We need to, if we are to survive on Planet Earth into the next few hundred years.