A few points (no pun intended) here:
(1) Cox never flipped any station in Miami to "The Point." It flipped stations in Tampa and Jacksonville, however.
(2) "The Point" was not a Cox concept. Randy Kabrich consulted it. Cox wasn't the only company to run it. Beasley flipped talker WWDB 96.5 to "The Point" as well at around the same time.
(3) WTJM (now WWPR) is presently owned by Clear Channel. KTJM was owned by Clear Channel when it flipped to jammin' oldies in '99. The two stations, however, were never co-owned, and different owners launched those formats. WTJM's jammin' oldies format launched under Chancellor Media/AMFM. Clear Channel had to spin KTJM off when it took over AMFM.
(4) Of course, Cumulus will duplicate successful formats in other markets. I think you're trying, albeit poorly, to say they're not the only company to do this. If that's what you're saying, you're absolutely correct. However, operators worth their salt don't just say, "Hey! We're having good luck with this concept over there. So, let's try it here!" They research the market to see if this new format is likely to work before deciding to pull the trigger. While you could make a convincing case that Cumulus makes poor decisions across its various markets and does poor research, you can't say they don't carefully plan it. If Cumulus takes 103.7 or 97.5 to Journey, it won't be because they're doing it elsewhere. It will be because their research tells them it will work.