Why is coffee not steeped in tea bags?

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Brewing coffee and steeping tea seem to be the same process: soluble molecules of coffee/tea are dissolved into hot water and the solid insoluble parts are filtered out by my understanding. So why can’t coffee come in tea bags so that it would be easier to make a singular cup? Or inversely, why is hot water not percolated over tea like making a pot of coffee?

In: Chemistry