MA (Mastercard Incorporated) Investment Idea
Mastercard和Visa一样，是一个令人羡慕的生意模式。它们不承担信用风险，只是在每笔交易中收取通行费。Charlie常说，找到一个好的生意模式比找到一个便宜的股票重要得多。支付网络就是这样的好生意。
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