So that you can't update your remote unless you have an Internet connection. OR so you can't update it if their servers are busy. Or down. Or . . .
Oh wait .. . those are dis-advantages.
Essentially any that use IR remotes themselves.
I've personally have used X10 stuff (using an X10 IR543 IR interface to receive IR and talk to various X10 modules) as well as Lutron Maestro IR (individual dimmer switches with IR receivers built in). I'm sure there are others.