Some of it depends on the venue. There is a small bar/restaurant near me in a rural place. Blues bands (incl a blues jam) play there all the time and it’s packed. Some might stem from the fact it holds about 40 people. All crammed in The band has to move to let people in and out of the door. Might have to do with nothing else going on in the area. Blues has older crowds. People still dance to it. Just have to play the right places for your music.