Think of it from the player's point of view. If you send someone not-quite-trusted or of fallible security $10 worth of btc, then the worst that can happen is y

Think of it from the player's point of view. If you send someone not-quite-trusted or of fallible security $10 worth of btc, then the worst that can happen is you never see it again. If you give them your cc (or worse, debit card) number, then there's a chance of unauthorized charges to deal with later.