Because when the roku tv's were first released there was no need for number keypad. No service allowed direct entry of tv channels. Plus there is no space on a roku remote for ten key pad. Roku only supplies the UI for roku tv's, if the tv manufacturer wanted they could have furnish there own shaped remote, but they went with roku standard remote, which is too small. Does apple tv have ten key pad? Fire tv's don't have one either. Neither does chromecast. If one would i'm sure they all would have newer remotes with ten key pad.