Savvy LOB leaders would likely counter that you're missing a key point in your assessment of this issue -- what happens if you *don't* have a grassroots shadow IT movement at your company? Can you afford to wait indefinitely for the business technology that your peer group takes for granted?

My point: realize that when LOB executives endorse bypassing the traditional IT organization it's an reactive act of desperation, not an proactive act of rebellion. If legacy IT organizations could better meet the business agility and competitiveness needs of their internal stakeholders, then this work-around would be a moot point.