Originally Posted by RedSun

Here at FT, almost no one uses AmEx Platinum card to swipe in grocery stores, or department stores. We use Platinum exclusively for air tickets. "Swipe fee" is a generic terms for "credit card spending". AmEx earns "swipe fee" on all purchases, air tickets included.

Originally Posted by RedSun

But here you are talking about those "road warriors". They travel frequently and know travel and credit card rewards much better than the "most Platinum card holders" you mentioned above. They read FT, TPG, DoC and other bloggers. They are not the common "Joes".

Platinum is not the very first AmEx cards most people have. It is the most expensive card for common people. So most AmEx cardholders would not be using Platinum card as the main driver. When they get the needs for Platinum card, they would probably already have other AmEx cards.

It has no spending bonus other than air ticket. Even the no fee Everyday cards earn more MR points than the Platinum card.