As Domingo mentioned, KYNG took over KODZ "Oldies 94.9" in an LMA and immediately flipped it to country as "Sunny 95." I've always heard Scott Ginsburg really regretted that deal because the paperwork for the LMA was signed before the book came out, and Oldies 94.9 was up big and within striking distance of KLUV when it was released. However, the deal was done and the format was gone before anybody knew the results. Sunny 95 ran various versions of country, all of which usually skewed older and/or softer until Infinity bought Alliance in '96. KSNN "Sunny 95" became KEWS "All News 94.9" in March '96. Although Sunny 95 never really caught on, Domingo's probably right that it did take KSCS and KPLX down a notch. Plus, it likely drove WBAP, which had been slowly adding talk shows over the previous few years, completely out of the format.
Country was really big in the early 90's, and Dallas/Ft. Worth was hardly unique in having a glut of country stations. Kansas City, for example, had three country stations (1 AM and 2 FM) in January 1991. By December 1993, it had five (2 AM and 3 FM). Tulsa also had country on 1170, 95.5, 98.5 and 99.5 by March 1993. Plus, about half the market could get country KMMY 97.1 out of Muskogee, which flipped to country from AC in '91. San Antonio had country on 680, 97.3, 100.3 and 106.7, and everybody in the market also had access to at least KBOP-FM/KBUC 98.3 and/or KNBT 92.1.
Even today, country seems have caught fire again in at least some areas. Four full-market country stations is anything but rare. As recently as 10 years ago, Oklahoma City had country on 93.3, 96.1, 96.9, and 101.9. Tulsa has four FM country stations that cover the entire market in 95.5, 98.5, 99.5 and 106.1. Wichita has 92.3, 100.5, 101.3 and 102.1 as well as a rimshot country station on 107.9 going after it. Even the last frontier of Anchorage, AK has country on 96.3, 100.9, 104.1, and 107.5.