I thought that you were going down the "fuck the bank, for reasons" line of thought. I'm glad you posted this second piece.
People have tried to do what you are saying in the past and it usually ends up that they get screwed. People tried this during the Y2K scare, during the housing boom of the early 200's, the stock market boom of the 90's, 2000's and up until now by buying on margin. The bank always wants their money back and the buyer of what you are trying to sell usually sees the value as less than what you need, unless you have a damn good crystal ball. The issue with CC's is that you begin making payments immediately, there is no wait time, so if you are trying to buy on credit and sell at some point in time in the future you have to realize that the high rates (which are going to go higher) are going to hit next month in the form of minimum payments, which eats into the profit and adds additional risk, especially if we are heading into a recession and nobody has the money or desire to buy what you are offering. Its not a play that many would recommend, and this economy has yet to fully downturn in terms of demand destruction, which is what the Fed is trying to accomplish.
It's a good conversation to have for sure as I am sure that others have thought the same thing but not tried to flesh out all the risks associated with it.
