I do not think so.
There will always be those legacy apps, those good old ones as well as not that old ones, that you might not want to touch for now. Hence it is not a must to take them and push them by force to cloud.
And those parts of the enterprise app that are "sensitive", "niche" and probably the "competitive edge" would not worth the risk of letting alone in that cloudy sky.
The edge is to know what to have on the cloud and what not. It again boils down to enterprise architecture problem. This is where you need cloud tools, to bridge your internal enterprise apps with your external cloud leverage.
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