i think touch n go will gain market share.
It can be used for toll gate/pay direct from e-wallet.
This is the reason people keep it.

Other e-wallet will simply die off without a core feature use.

Grab wallet can do the same with the riding system.
But problem with grab, not many people actually pay for the taxi everyday, which makes the core feature less desirable.
So people might not look at it as regular app.