Hikvision has obviously done well in it's years long effort to build a brand in the security channel. If they were to sell DVR or NVR kits at retail (DIY style), would that slow down their fast growth in the security channel? The kits at retail today are typically not "security channel" brands: Q-See, Swann, Lorex, Zmodo, Defender, etc etc.
[UPDATE: Hikvision has gone into retail, see Hikvision launches Ezviz direct sales.]