There are many online wallets like Xapo and Coinbase that do not charge any transaction fees or they pay that fees by themselves. I want to know that how would they profit from paying for their user's transaction fees ?
If no fees is charged then the transaction take a much long time or even might get cancelled !
I`ve never seen an online wallet that doesn`t charge transaction fees.
They all charge transaction fees, because they all need revenue to pay for hosting and everything else.
This is their business model.
Obviously, Xapo does not charge transaction fees.
However that does not means they dont pay it, they just have another business model- they pay it from ads, donations etc. Not directly from users transactions.