The gearing philosophy on racing road bikes is different. The goal is to give you two passes through the corncob section of the cassette. To get shifts that small a 1x cassette would have to be 16 speed or something. 1x works great on a commuter, though.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."