Amid a flurry of announcements this week, there was one thing Apple (NASDAQ:AAPL) didn't talk about: payments. The Mac maker is expected to get into mobile payments, and Tim Cook said Apple now has 575 million active iTunes accounts with credit card information on file. That's an enormous asset just waiting to be tapped, yet Apple is staying mum.

Google (NASDAQ:GOOGL) Wallet has mostly failed to take off, and there have been reports that the search giant's Wallet customer support is poor and the service itself doesn't function properly. Google may have a vision, but it's not executing well on payments.

In the video below, Fool contributor Evan Niu, CFA, discusses a possible reason why Apple didn't talk about payments.