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I think Chase isn't budging on the APR's because they don't want to encourage balances. They like the merchant/vendor use fees, because that is quick turn profits. APR income takes time to pay out with associated risk in the economic climate right now.
My Chase account is a whopping 29.99%, but I PIF and treat it like a net 30 charge account. It has a $3.5k CL, so not real high, but high enough that it is useful. I PC'd to the Chase Freedom Plus and right now am enjoying the rewards. Once the reward changes and reductions start to kick in, I'll PC downgrade to a non-AF reward card.
In time I will seek an APR reduction, but I'm not worried about it. I opened other TL's with better CL's and APR's, but didn't can Chase.