I did a case about credit card business. In the case there is a chart: on one axis, it is the "share of wallet". on the other axis, it is the "average money spent by credit card". So there are 4 cluster segments:

1. High wallet share, high spending

2. Low wallet share, high spending

3. High wallet share, low spending

4. Low wallet share, low spending

I have tried to search on internet, but it seems that this metric is not so common and not many discussions were found. Could anyone point out what would be the specific marketing strategy be in these four segments? Also, what would be the sequence of priority of these 4 segments? (P.S. One thing that confuses me is that we don't know client's potential spending power. For instance, even though the current spending is low, it might be that clients are using competitors credit card. It seems that it's quite hard to know each segments' overall revenue potential. )