Gene Munster of Piper Jaffray believes that for all of Apple's success with iTunes Match so far, the company is probably still only breaking even on the service. Sure, $24.99 a year from all of the service's users is a lot of money flowing in, but there's a lot going the other way as well, from server costs to music royalties and all of the other charges with running such a complicated service.
Munster believes there are 135 million active iTunes users in America, so if only a small fraction of those subscribe to the service, there's a nice chunk of change coming in to Apple. But at the same time, Apple isn't expecting huge earnings from Match; it's essentially a promo