We used to make regular trips to Yoshi's in Oakland, surely one of the nicest venues for live Jazz in the US. They featured top-tier players and had been in existence since 1979. The audience was composed of mostly older couples.
At some point, they abruptly abandoned Jazz and changed the format to what is, I suppose, contemporary R&B. No doubt, they are attracting larger crowds, now but what a disappointment for Jazz fans.
The bottom line rules.