Apple unveiled a series of new products on Tuesday that showed how it continues to center its marketing pitch on consumer privacy, at the potential expense of other companies, while muscling into markets pioneered by much smaller competitors. In an hourlong infomercial that was streamed from its Silicon Valley headquarters, Apple showed off a new high-end iPad and an iMac desktop computer based on new computer processors that Apple now makes itself. The company also said it was redesigning its podcast app, which competes with companies like Spotify, to enable creators to charge for their shows. And it revealed the AirTag, a $29 disc that attaches to key rings or wallets so they can be found if lost.