I have no idea about Pakistan but in the US you can swap the USDC to PYUSD and send it to anyone’s PayPal account using Solana in a second. From the PayPal account account, it can be sent one to one to your bank account.
> Of the four problems Wave needs to solve, the hardest is providing "an easy way for users to exchange their balance for cash and vice versa."
Just using PayPal would mean missing out all the benefits of crypto. I do it because defi yields are much higher than a bank. People in their target audience may do it because international transfers cost less than a fraction of a penny.
