Retiring Jersey Numbers

This article discusses a recent decision to honor all the great names in baseball (and in particular, Babe Ruth) by retiring all the single digit numbers from current and future players' jerseys. In the past when they've retired numbers (or I suppose I should say that one time they retired one number) they allowed players currently using that number to keep it, however this time when they retire the numbers, current players will have to choose a new number immediately.

I have to ask the same question that the above articles does: Where is it going to stop? 75 years from now when a handful of current players have become baseball legends, are we going to retire their numbers as well? Pretty soon it seems to me that players are going to have seven-digit numbers to match their seven+ digit paychecks. "Next up to bat is number 1,764,982."

The article mentioned that players will (might?) be allowed to use non-number characters (such as commas, periods, etc.) and symbols (such as pi and epsilon) to represent their jersey number. For example, they player who has 3 now could become 3.0, which is technically a different number as far as baseball is concerned. Seeing as I never cared for significant figures, it's all the same to me.