But there are other crypto wallets that pay high interest.
If someone was to buy and hold, why would they get a wallet that doesn't pay interest?
Wallets if they are good, should an open sourced and non custodial. What does non custodial mean?
It means you own private keys and your bitcoin is only owned by you, in that wallet. The wallet software company does have access to your bitcoin as they don't own private keys. So if they don't have your bitcoins, how do they get money to pay interest for bitcoin amount you stores in your wallet?
Logically no ways to have such interest from a non custodial wallet.
If you see a wallet that provide interest, it is custodial and you have risk. You have to see what is the interest rate they promise to pay? If it is too good, higher than banks, big red flag. That wallet provider is like running a scam to steal your bitcoin or a Ponzi.