there arent really a dozen, the mainstream one are still tng, boost and grabpay. Let them fight it all out, see who will come out on top. Basically, if you have the 3, you are covered for all shops that accept ewallet.

take up rate will definitely not as fast as expected, because cc is still dominant. China is only fast because, they skip the cc era. so they only have ewallet as their choice. Hard to lure people away from cc, due to people are used to it and attractive cashback and free gifts during signup