Because the fiat fees are too high + kyc as someone said below. And even crypto is super high too. For example: https://ethgasstation.info/ https://ethgasstati

Because the fiat fees are too high + kyc as someone said below. And even crypto is super high too. For example: https://ethgasstation.info/ https://ethgasstation.info/ average ETH transfer: $0.229/transfer With ETH your fees can be equal to the micropayment itself. There may be other blockchains that are cheaper, but then of course even fewer people use those cryptos, so that 'advantage' that people advocate really isn't an advantage... If you're talking a buck then you could build something that does this with ETH for example, then it would be .229$/1.229$ = 18.63% fee as compared to total cost if you want $1 total sent to platform/creator (seems more reasonable). Or you could just take the fee out of the buck itself, that would be 22.9%.