Late 70's I was a full time musician. No other income and playing 4 to 7 nights a week. I was jumping bands on occasion. One would break up or I would leave and the following week be in another working band. I was blessed to live in a town which, at the time, had a minimum of a dozen working bands, (most were full time) playing the various clubs that were in that town. Plus we had a huge club scene on the military base there. A tourist beach area with more clubs was just 20 miles up the road as well. Even crappy bands could find weekend gigs somewhere.
One band I helped to start was gigging every weekend after just a few weeks to practice. I ended up almost from the start as the booking agent for the band. If my phone bill wasn't over $200 (at the time) we weren't working. I started booking us into the big regional nightclubs. The ones that had bands which were regional attractions. We were naive enough to not know that we had no business being there, but we went, and with the stage show we had, and the diverse repertoire of music, we managed to impress most of the clubs. This band lasted around 1.5 years before the drummer quit/got fired, as a result of a disastrous gig related to a personal problem. So began the rapid decline.
This full time playing went on for the better part of 3 years. Toward the end of the full time era, (with the band mentioned above) the last band I had finally broke up and I continued to play full time as a solo act for another 6 months. The traveling and constant running to do all the work, booking, roadie, musician, truck driver, accountant, was getting old. I needed a break before I burned out. I was playing in NC, SC, and VA mostly.
After the solo act ended, I put the guitars away. A phone call a year or so later held the promise of a house band gig. The club owner was agreeing to buy lights and a sound system of OUR choosing.... basically a blank check. He held good to his promise and we had a nice PA and light set up. The holy grail for many musicians. With 12 rehearsals, and never playing through a complete song, we started the first weekend after the New Year. The club owner was apprehensive since he listened to our rehearsals and we had to play him a complete song just to show we could do it. That band lasted two and a half years. Drama got the better of that band around the 2 yr point and it was a downhill slide. Since I didn't need the PA I still had in the shed.... I sold the PA I owned to a band who just won a national talent show and had $50,000 burning a hole in their pockets, and started working a "real job" for a time. ( that band crashed and burned hard with in the year...all that glitters is not gold)
About the time I started to see the classic symptoms of a band about to crash and burn, AGAIN, I started to buy up some gear to start a small home studio. This was before digital.
It was fun while it lasted. In most of the full time bands, we had a home base of operation and were able to be home quite a bit. The money made was enough to pay the bills (most of the time) and allow us to buy more gear, fix the truck, and party.
Since the demise of the house band, I did stop live gigging from that point till this. I can count on one hand the times I have played live and got paid. Maybe a dozen free jam sessions in front of an audience in that time.
Now days, it's studio stuff.