|Daniel Ziermann Venture-Lieutenant, Wisconsin—Pleasant Prairie aka Brew City Crafter|
We're seeing a similar trend, here in SE Wisconsin. Convention play is dominated by D&D 5E (Adventurers league tends to have at least twice as many players as PFS, at the local conventions). As far as the local game days, we went from a peak of six locations with 25 plus tables per month (two years ago), down to three locations with about 12 tables per month (including Starfinder).
As has been mentioned up thread, new player recruitment has become more difficult. Player fatigue, ten years of rules bloat, four campaigns to support, and a pending new addition, seem to have really put a damper on enthusiasm.
Hopefully, things will get better, once the new edition comes out.