Isn’t spending a significant portion of resources doing customer-specific work pretty much the opposite of the point? That sounds just like sysadmin work for hire, which is obviously valuable, but is essentially the key distinguishing factor from traditional server computing and cloud computing.
Of course at the edges there is always going to be overlap, since important customers will have feature requests and complaints that the cloud providers will learn from.
Of course at the edges there is always going to be overlap, since important customers will have feature requests and complaints that the cloud providers will learn from.