I did the country band too for a short while. All you say is true.I resemble that remark.. and now play bass in a country band.
Played lead guitar in my variety/rock band for 7 yrs. It survived thru most of the "crash years" 2008-2011 and fell apart when we lost our frontman for health reasons. We mostly made a pittance, working our a$$ off for maybe $60-75 a night (plus tips); constantly had to work venue management (how many people are you going to bring?) for repeat gigs; was lucky to get 3 gigs a month and IF we had 2 gigs on a weekend, they were at DIFFERENT venues. Sure we played the "standards", but as a variety band we also played blues, R&B, MJ (yes, Michael!) and some Country to boot!
3 yrs ago, the last frontman in the rock band (we went thru 3 or 4 in quick succession before the breakup) convinced me to learn 10 songs on bass - his country band leader (bass) had died in a car wreck and they were doing a "wake". 5 mins after I left the service I got a call asking me to joint the band on bass. We worked EVERY WEEKEND for MOST of 2012 (and I mean EVERY weekend), at the end of which there was a parting of ways (drummer and I) as they wanted to tour, and we both had jobs we wern't willing to part with.
Since Mid-2013 I've been with another country band. Both these bands play the "A" Country venues (Toby Keith's, Southern Junction, Cutters, etc.) in the region where the house band often opens for national acts; make a minimum of $125+ a night; play Fri AND Sat night at the same venue; get booked 6 months to a year out; and so on. No comparison to rock n roll. And PEOPLE DANCE when you play!!!
We play pop-country (Nashville Top-40), TX/Red Dirt and Classic country. Mostly TOp-40 so we constantly learn new material, probably adding up to 10 songs a month, depending on what's on the charts. And yes, Country music has it's own "unholy trinity" equivalents.
However, it really didn't matter how many new songs we added, too much of the bass was all the same from song to song.