Lenovo Thinkpad has a red dot mouse. Why don't other brands of computers have red dot mice?

Hello, TrackPoint Little Red Riding Hood is a classic original technology of Lenovo ThinkPad and a symbol of ThinkPad. Protected by Lenovo ThinkPad patent. Other brands have no right to use it without authorization. I suggest you consider the following Lenovo ThinkPad Edge series. Lenovo official website /Lenovo_Series_List.aspx? Category code =A 19B0 1C09