You were in the taxi trade and you are now into investment so you should be aware what is going on. Grab app biggest customers on the taxi side are Comfort drivers. They use both Comfort and Grab Apps. Temasek has invested in Grab so has AliBaba and SoftBank. It operates in 30 cities in South East Asia and on the customer side, their growth is 6 times each year for the last 2 years.
The Comfort taxi drivers who use Grab app are smart as they cover both options and operate with a bigger catchment pool of customers. Eventually the customer will come to a stage where one of the app will be his default and all signs indicate it will Grab. Why do you think Temasek invested in it more than 2 years ago.
SMRT is also partnering Grab.
The CTO of Grab came from Google and not from NTU. The founders came from Malaysia and not Singapore.