sabre23ts
(Sabre23ts)
5
It is the other way around. Google Maps is now getting GTFS data directly from Prasarana/Rapid Bus including realtime bus arrival data. But not all data that Google mark as RapidKL’s actually came from Rapid Bus.
Similar for Moovit. They now get directly from Prasarana/Rapid Bus its GTFS data too, however they do post processing so some things are changed/streamlined (duplicate bus stops name etc).
OSM mappers can certainly request the same data in GTFS format from Rapid Bus for updating into OSM. 
Ref https://www.myrapid.com.my/corporate-information/media/media-releases/aplikasi-moovit-mampu-membantu-pengguna-bas-merancang-perjalanan