Uber always had cash options in SEA and still does in countries it continues to operate in, like India .

Each country has and always has a lot autonomy on features and services offered . Just their booking methods in different airports can have lot of variation , OTP workflows in geos with high no show rates , transportation options like motorcycles or Tuk tuk or public transit integration all are unique to many locations

Consolidation and exits happened for variety of reasons i strongly doubt it was ever because of product features or lack thereof