I see this play as a funnel to their high end CDN and DDoS services.

Being in the industry, it only makes sense for them to target big business. They're likely disinterested in low margin domain renewals. Their real bread and butter is the high LTV customers with deep pockets who have upper management requesting "security" and "encryption" because of all of the recent "hacks" in the news.

Long term, they'll probably change their tune and start to target SMB if it works out well. It's far easier to pick a niche segment and deal with far less customer support as you're dealing with lower volumes of conversions.